# List of The Big Bang Theory episodes

The Big Bang Theory is an American television sitcom created and executively produced by Chuck Lorre and Bill Prady for CBS. Like the name of the series itself (with the exception of the first episode, "Pilot"), episode titles of The Big Bang Theory always start with "The" and resemble the name of a scientific principle, theory or experiment, whimsically referencing a plot point or quirk in that episode.
During the course of the series, 279 episodes of The Big Bang Theory aired, between September 24, 2007, and May 16, 2019. All seasons and episodes have been released on DVD, Blu-ray, and Max.

## Series overview

| Season | Episodes | Episodes | Originally released | Originally released | Viewers rank | U.S. Viewers (millions) | 18–49 rank | 18–49 rating/share |
| Season | Episodes | Episodes | First released | Last released | Viewers rank | U.S. Viewers (millions) | 18–49 rank | 18–49 rating/share |
| 1 | 17 | 17 | September 24, 2007 (2007-09-24) | May 19, 2008 (2008-05-19) | 68 | 8.34 | 46 | 3.3/8 |
| 2 | 23 | 23 | September 22, 2008 (2008-09-22) | May 11, 2009 (2009-05-11) | 40 | 10.07 | 22 | 3.8 |
| 3 | 23 | 23 | September 21, 2009 (2009-09-21) | May 24, 2010 (2010-05-24) | 12 | 14.22 | 5 | 5.3/13 |
| 4 | 24 | 24 | September 23, 2010 (2010-09-23) | May 19, 2011 (2011-05-19) | 13 | 13.21 | 7 | 4.4/13 |
| 5 | 24 | 24 | September 22, 2011 (2011-09-22) | May 10, 2012 (2012-05-10) | 8 | 15.82 | 6 | 5.5/17 |
| 6 | 24 | 24 | September 27, 2012 (2012-09-27) | May 16, 2013 (2013-05-16) | 3 | 18.68 | 2 | 6.2/19 |
| 7 | 24 | 24 | September 26, 2013 (2013-09-26) | May 15, 2014 (2014-05-15) | 2 | 19.96 | 2 | 6.2/20 |
| 8 | 24 | 24 | September 22, 2014 (2014-09-22) | May 7, 2015 (2015-05-07) | 2 | 19.05 | 4 | 5.6/17 |
| 9 | 24 | 24 | September 21, 2015 (2015-09-21) | May 12, 2016 (2016-05-12) | 2 | 20.36 | 3 | 5.8/19 |
| 10 | 24 | 24 | September 19, 2016 (2016-09-19) | May 11, 2017 (2017-05-11) | 2 | 18.99 | 3 | 4.9/19 |
| 11 | 24 | 24 | September 25, 2017 (2017-09-25) | May 10, 2018 (2018-05-10) | 1 | 18.63 | 5 | 4.4 |
| 12 | 24 | 24 | September 24, 2018 (2018-09-24) | May 16, 2019 (2019-05-16) | 2 | 17.31 | 6 | 3.6 |

## Episodes
### Season 1 (2007–08)

| No. overall | No. in season | Title | Directed by | Written by | Original release date | Prod. code | U.S. viewers (millions) |
| 1 | 1 | "Pilot" | James Burrows | Chuck Lorre & Bill Prady | September 24, 2007 (2007-09-24) | 276023 | 9.52 |
| 2 | 2 | "The Big Bran Hypothesis" | Mark Cendrowski | Story by : Chuck Lorre & Bill Prady Teleplay by : Robert Cohen & Dave Goetsch | October 1, 2007 (2007-10-01) | 3T6601 | 8.50 |
| 3 | 3 | "The Fuzzy Boots Corollary" | Mark Cendrowski | Story by : Chuck Lorre Teleplay by : Bill Prady & Steven Molaro | October 8, 2007 (2007-10-08) | 3T6602 | 8.35 |
| 4 | 4 | "The Luminous Fish Effect" | Mark Cendrowski | Story by : Chuck Lorre & Bill Prady Teleplay by : David Litt & Lee Aronsohn | October 15, 2007 (2007-10-15) | 3T6603 | 7.94 |
| 5 | 5 | "The Hamburger Postulate" | Andrew D. Weyman | Story by : Jennifer Glickman Teleplay by : Dave Goetsch & Steven Molaro | October 22, 2007 (2007-10-22) | 3T6604 | 8.81 |
| 6 | 6 | "The Middle-earth Paradigm" | Mark Cendrowski | Story by : Dave Goetsch Teleplay by : David Litt & Robert Cohen | October 29, 2007 (2007-10-29) | 3T6605 | 8.41 |
| 7 | 7 | "The Dumpling Paradox" | Mark Cendrowski | Story by : Chuck Lorre & Bill Prady Teleplay by : Lee Aronsohn & Jennifer Glickman | November 5, 2007 (2007-11-05) | 3T6606 | 9.37 |
| 8 | 8 | "The Grasshopper Experiment" | Ted Wass | Story by : Dave Goetsch & Steven Molaro Teleplay by : Lee Aronsohn & Robert Cohen | November 12, 2007 (2007-11-12) | 3T6607 | 9.32 |
| 9 | 9 | "The Cooper-Hofstadter Polarization" | Joel Murray | Story by : Bill Prady & Stephen Engel Teleplay by : Chuck Lorre & Lee Aronsohn & Dave Goetsch | March 17, 2008 (2008-03-17) | 3T6608 | 8.93 |
| 10 | 10 | "The Loobenfeld Decay" | Mark Cendrowski | Story by : Chuck Lorre Teleplay by : Bill Prady & Lee Aronsohn | March 24, 2008 (2008-03-24) | 3T6609 | 8.53 |
| 11 | 11 | "The Pancake Batter Anomaly" | Mark Cendrowski | Story by : Chuck Lorre & Lee Aronsohn Teleplay by : Bill Prady & Stephen Engel | March 31, 2008 (2008-03-31) | 3T6610 | 8.44 |
| 12 | 12 | "The Jerusalem Duality" | Mark Cendrowski | Story by : Jennifer Glickman & Stephen Engel Teleplay by : Dave Goetsch & Steven Molaro | April 14, 2008 (2008-04-14) | 3T6611 | 7.63 |
| 13 | 13 | "The Bat Jar Conjecture" | Mark Cendrowski | Story by : Stephen Engel & Jennifer Glickman Teleplay by : Bill Prady & Robert Cohen | April 21, 2008 (2008-04-21) | 3T6612 | 7.39 |
| 14 | 14 | "The Nerdvana Annihilation" | Mark Cendrowski | Story by : Bill Prady Teleplay by : Stephen Engel & Steven Molaro | April 28, 2008 (2008-04-28) | 3T6613 | 8.07 |
| 15 | 15 | "The Pork Chop Indeterminacy" | Mark Cendrowski | Story by : Chuck Lorre Teleplay by : Lee Aronsohn & Bill Prady | May 5, 2008 (2008-05-05) | 3T6614 | 7.38 |
| 16 | 16 | "The Peanut Reaction" | Mark Cendrowski | Story by : Bill Prady & Lee Aronsohn Teleplay by : Dave Goetsch & Steven Molaro | May 12, 2008 (2008-05-12) | 3T6615 | 7.79 |
| 17 | 17 | "The Tangerine Factor" | Mark Cendrowski | Story by : Chuck Lorre & Bill Prady Teleplay by : Lee Aronsohn & Steven Molaro | May 19, 2008 (2008-05-19) | 3T6616 | 7.34 |

### Season 2 (2008–09)

| No. overall | No. in season | Title | Directed by | Written by | Original release date | Prod. code | U.S. viewers (millions) |
| 18 | 1 | "The Bad Fish Paradigm" | Mark Cendrowski | Story by : Bill Prady Teleplay by : Dave Goetsch & Steven Molaro | September 22, 2008 (2008-09-22) | 3T7351 | 9.32 |
| 19 | 2 | "The Codpiece Topology" | Mark Cendrowski | Story by : Chuck Lorre Teleplay by : Bill Prady & Lee Aronsohn | September 29, 2008 (2008-09-29) | 3T7352 | 8.60 |
| 20 | 3 | "The Barbarian Sublimation" | Mark Cendrowski | Story by : Nicole Lorre Teleplay by : Steven Molaro & Eric Kaplan | October 6, 2008 (2008-10-06) | 3T7353 | 9.39 |
| 21 | 4 | "The Griffin Equivalency" | Mark Cendrowski | Story by : Bill Prady & Chuck Lorre Teleplay by : Stephen Engel & Tim Doyle | October 13, 2008 (2008-10-13) | 3T7354 | 9.34 |
| 22 | 5 | "The Euclid Alternative" | Mark Cendrowski | Story by : Bill Prady & Steven Molaro Teleplay by : Lee Aronsohn & Dave Goetsch | October 20, 2008 (2008-10-20) | 3T7355 | 9.33 |
| 23 | 6 | "The Cooper–Nowitzki Theorem" | Mark Cendrowski | Story by : Stephen Engel & Daley Haggar Teleplay by : Tim Doyle & Richard Rosenstock | November 3, 2008 (2008-11-03) | 3T7356 | 9.67 |
| 24 | 7 | "The Panty Piñata Polarization" | Mark Cendrowski | Story by : Bill Prady & Tim Doyle Teleplay by : Jennifer Glickman & Steven Molaro | November 10, 2008 (2008-11-10) | 3T7357 | 10.01 |
| 25 | 8 | "The Lizard–Spock Expansion" | Mark Cendrowski | Story by : Bill Prady Teleplay by : Dave Goetsch & Jennifer Glickman | November 17, 2008 (2008-11-17) | 3T7358 | 9.76 |
| 26 | 9 | "The White Asparagus Triangulation" | Mark Cendrowski | Story by : Dave Goetsch & Steven Molaro Teleplay by : Stephen Engel & Richard Rosenstock | November 24, 2008 (2008-11-24) | 3T7359 | 10.03 |
| 27 | 10 | "The Vartabedian Conundrum" | Mark Cendrowski | Story by : Chuck Lorre & Steven Molaro Teleplay by : Bill Prady & Richard Rosenstock | December 8, 2008 (2008-12-08) | 3T7360 | 10.50 |
| 28 | 11 | "The Bath Item Gift Hypothesis" | Mark Cendrowski | Story by : Bill Prady & Richard Rosenstock Teleplay by : Stephen Engel & Eric Kaplan | December 15, 2008 (2008-12-15) | 3T7361 | 11.22 |
| 29 | 12 | "The Killer Robot Instability" | Mark Cendrowski | Story by : Bill Prady & Richard Rosenstock Teleplay by : Steven Molaro & Daley Haggar | January 12, 2009 (2009-01-12) | 3T7362 | 11.81 |
| 30 | 13 | "The Friendship Algorithm" | Mark Cendrowski | Story by : Bill Prady & Richard Rosenstock Teleplay by : Chuck Lorre & Steven Molaro | January 19, 2009 (2009-01-19) | 3T7363 | 11.03 |
| 31 | 14 | "The Financial Permeability" | Mark Cendrowski | Story by : Chuck Lorre & Steven Molaro Teleplay by : Richard Rosenstock & Eric Kaplan | February 2, 2009 (2009-02-02) | 3T7364 | 10.84 |
| 32 | 15 | "The Maternal Capacitance" | Mark Cendrowski | Story by : Chuck Lorre & Bill Prady Teleplay by : Richard Rosenstock & Steven Molaro | February 9, 2009 (2009-02-09) | 3T7365 | 12.72 |
| 33 | 16 | "The Cushion Saturation" | Mark Cendrowski | Story by : Chuck Lorre Teleplay by : Bill Prady & Lee Aronsohn | March 2, 2009 (2009-03-02) | 3T7366 | 10.83 |
| 34 | 17 | "The Terminator Decoupling" | Mark Cendrowski | Story by : Bill Prady & Dave Goetsch Teleplay by : Tim Doyle & Stephen Engel | March 9, 2009 (2009-03-09) | 3T7367 | 9.47 |
| 35 | 18 | "The Work Song Nanocluster" | Peter Chakos | Story by : Bill Prady & Lee Aronsohn Teleplay by : Dave Goetsch & Richard Rosenstock | March 16, 2009 (2009-03-16) | 3T7368 | 9.69 |
| 36 | 19 | "The Dead Hooker Juxtaposition" | Mark Cendrowski | Steven Molaro | March 30, 2009 (2009-03-30) | 3T7369 | 9.74 |
| 37 | 20 | "The Hofstadter Isotope" | Mark Cendrowski | Dave Goetsch | April 13, 2009 (2009-04-13) | 3T7370 | 10.06 |
| 38 | 21 | "The Vegas Renormalization" | Mark Cendrowski | Story by : Jessica Ambrosetti & Nicole Lorre & Andrew Roth Teleplay by : Steven Molaro | April 27, 2009 (2009-04-27) | 3T7371 | 9.24 |
| 39 | 22 | "The Classified Materials Turbulence" | Mark Cendrowski | Story by : Chuck Lorre & Lee Aronsohn Teleplay by : Bill Prady & Steven Molaro | May 4, 2009 (2009-05-04) | 3T7373 | 9.25 |
| 40 | 23 | "The Monopolar Expedition" | Mark Cendrowski | Eric Kaplan & Richard Rosenstock | May 11, 2009 (2009-05-11) | 3T7372 | 9.76 |

### Season 3 (2009–10)

| No. overall | No. in season | Title | Directed by | Written by | Original release date | Prod. code | U.S. viewers (millions) |
| 41 | 1 | "The Electric Can Opener Fluctuation" | Mark Cendrowski | Steven Molaro | September 21, 2009 (2009-09-21) | 3X5551 | 12.96 |
| 42 | 2 | "The Jiminy Conjecture" | Mark Cendrowski | Jim Reynolds | September 28, 2009 (2009-09-28) | 3X5552 | 13.27 |
| 43 | 3 | "The Gothowitz Deviation" | Mark Cendrowski | Story by : Lee Aronsohn & Richard Rosenstock Teleplay by : Bill Prady & Maria Ferrari | October 5, 2009 (2009-10-05) | 3X5553 | 12.52 |
| 44 | 4 | "The Pirate Solution" | Mark Cendrowski | Steve Holland | October 12, 2009 (2009-10-12) | 3X5554 | 13.07 |
| 45 | 5 | "The Creepy Candy Coating Corollary" | Mark Cendrowski | Story by : Chuck Lorre & Bill Prady Teleplay by : Lee Aronsohn & Steven Molaro | October 19, 2009 (2009-10-19) | 3X5556 | 13.47 |
| 46 | 6 | "The Cornhusker Vortex" | Mark Cendrowski | Story by : Bill Prady & Steven Molaro Teleplay by : Dave Goetsch & Richard Rosenstock | November 2, 2009 (2009-11-02) | 3X5555 | 12.73 |
| 47 | 7 | "The Guitarist Amplification" | Mark Cendrowski | Story by : Chuck Lorre & Lee Aronsohn Teleplay by : Bill Prady & Richard Rosenstock & Jim Reynolds | November 9, 2009 (2009-11-09) | 3X5557 | 12.80 |
| 48 | 8 | "The Adhesive Duck Deficiency" | Mark Cendrowski | Story by : Chuck Lorre & Bill Prady & Dave Goetsch Teleplay by : Steven Molaro & Eric Kaplan & Maria Ferrari | November 16, 2009 (2009-11-16) | 3X5558 | 13.23 |
| 49 | 9 | "The Vengeance Formulation" | Mark Cendrowski | Story by : Chuck Lorre & Maria Ferrari Teleplay by : Richard Rosenstock & Jim Reynolds & Steve Holland | November 23, 2009 (2009-11-23) | 3X5559 | 14.13 |
| 50 | 10 | "The Gorilla Experiment" | Mark Cendrowski | Story by : Chuck Lorre & Richard Rosenstock & Steve Holland Teleplay by : Bill Prady & Steven Molaro & Maria Ferrari | December 7, 2009 (2009-12-07) | 3X5560 | 14.38 |
| 51 | 11 | "The Maternal Congruence" | Mark Cendrowski | Story by : Lee Aronsohn & Steven Molaro & Richard Rosenstock & Maria Ferrari Teleplay by : Chuck Lorre & Bill Prady & Dave Goetsch | December 14, 2009 (2009-12-14) | 3X5562 | 15.58 |
| 52 | 12 | "The Psychic Vortex" | Mark Cendrowski | Story by : Lee Aronsohn & Steven Molaro Teleplay by : Chuck Lorre & Eric Kaplan & Jim Reynolds | January 11, 2010 (2010-01-11) | 3X5561 | 15.82 |
| 53 | 13 | "The Bozeman Reaction" | Mark Cendrowski | Story by : Bill Prady & Lee Aronsohn & Jim Reynolds Teleplay by : Chuck Lorre & Steven Molaro & Steve Holland | January 18, 2010 (2010-01-18) | 3X5563 | 15.05 |
| 54 | 14 | "The Einstein Approximation" | Mark Cendrowski | Story by : Lee Aronsohn & Dave Goetsch & Steve Holland Teleplay by : Chuck Lorre & Steven Molaro & Eric Kaplan | February 1, 2010 (2010-02-01) | 3X5565 | 15.51 |
| 55 | 15 | "The Large Hadron Collision" | Mark Cendrowski | Story by : Chuck Lorre & Steven Molaro & Jim Reynolds Teleplay by : Lee Aronsohn & Richard Rosenstock & Maria Ferrari | February 8, 2010 (2010-02-08) | 3X5564 | 16.26 |
| 56 | 16 | "The Excelsior Acquisition" | Peter Chakos | Story by : Chuck Lorre & Lee Aronsohn & Steven Molaro Teleplay by : Bill Prady & Steve Holland & Maria Ferrari | March 1, 2010 (2010-03-01) | 3X5566 | 15.73 |
| 57 | 17 | "The Precious Fragmentation" | Mark Cendrowski | Story by : Lee Aronsohn & Eric Kaplan & Maria Ferrari Teleplay by : Bill Prady & Steven Molaro & Richard Rosenstock | March 8, 2010 (2010-03-08) | 3X5567 | 16.32 |
| 58 | 18 | "The Pants Alternative" | Mark Cendrowski | Story by : Chuck Lorre & Bill Prady & Steve Holland Teleplay by : Eric Kaplan & Richard Rosenstock & Jim Reynolds | March 22, 2010 (2010-03-22) | 3X5568 | 13.42 |
| 59 | 19 | "The Wheaton Recurrence" | Mark Cendrowski | Story by : Chuck Lorre & Steven Molaro & Nicole Lorre & Jessica Ambrosetti Teleplay by : Bill Prady & Dave Goetsch & Jim Reynolds & Maria Ferrari | April 12, 2010 (2010-04-12) | 3X5569 | 13.39 |
| 60 | 20 | "The Spaghetti Catalyst" | Anthony Rich | Chuck Lorre & Bill Prady & Lee Aronsohn & Steven Molaro | May 3, 2010 (2010-05-03) | 3X5570 | 11.63 |
| 61 | 21 | "The Plimpton Stimulation" | Mark Cendrowski | Story by : Chuck Lorre & Bill Prady & Lee Aronsohn Teleplay by : Steven Molaro & Jim Reynolds & Maria Ferrari | May 10, 2010 (2010-05-10) | 3X5571 | 13.73 |
| 62 | 22 | "The Staircase Implementation" | Mark Cendrowski | Story by : Lee Aronsohn & Steven Molaro & Steve Holland Teleplay by : Chuck Lorre & Dave Goetsch & Maria Ferrari | May 17, 2010 (2010-05-17) | 3X5572 | 15.02 |
| 63 | 23 | "The Lunar Excitation" | Peter Chakos | Story by : Chuck Lorre & Bill Prady & Maria Ferrari Teleplay by : Lee Aronsohn & Steven Molaro & Steve Holland | May 24, 2010 (2010-05-24) | 3X5573 | 15.02 |

### Season 4 (2010–11)

| No. overall | No. in season | Title | Directed by | Written by | Original release date | Prod. code | U.S. viewers (millions) |
| 64 | 1 | "The Robotic Manipulation" | Mark Cendrowski | Story by : Chuck Lorre & Lee Aronsohn & Dave Goetsch Teleplay by : Steven Molaro & Eric Kaplan & Steve Holland | September 23, 2010 (2010-09-23) | 3X6651 | 14.04 |
| 65 | 2 | "The Cruciferous Vegetable Amplification" | Mark Cendrowski | Story by : Bill Prady & Lee Aronsohn & Steve Holland Teleplay by : Chuck Lorre & Steven Molaro & Jim Reynolds | September 30, 2010 (2010-09-30) | 3X6652 | 13.05 |
| 66 | 3 | "The Zazzy Substitution" | Mark Cendrowski | Story by : Chuck Lorre & Bill Prady & Jim Reynolds Teleplay by : Lee Aronsohn & Steven Molaro & Maria Ferrari | October 7, 2010 (2010-10-07) | 3X6653 | 12.59 |
| 67 | 4 | "The Hot Troll Deviation" | Mark Cendrowski | Story by : Chuck Lorre & Steven Molaro & Adam Faberman Teleplay by : Bill Prady & Lee Aronsohn & Maria Ferrari | October 14, 2010 (2010-10-14) | 3X6654 | 12.57 |
| 68 | 5 | "The Desperation Emanation" | Mark Cendrowski | Story by : Bill Prady & Lee Aronsohn & Dave Goetsch Teleplay by : Chuck Lorre & Steven Molaro & Steve Holland | October 21, 2010 (2010-10-21) | 3X6655 | 13.05 |
| 69 | 6 | "The Irish Pub Formulation" | Mark Cendrowski | Story by : Chuck Lorre & Lee Aronsohn & Steven Molaro Teleplay by : Bill Prady & Eric Kaplan & Maria Ferrari | October 28, 2010 (2010-10-28) | 3X6656 | 13.04 |
| 70 | 7 | "The Apology Insufficiency" | Mark Cendrowski | Story by : Chuck Lorre & Lee Aronsohn & Maria Ferrari Teleplay by : Bill Prady & Steven Molaro & Steve Holland | November 4, 2010 (2010-11-04) | 3X6657 | 14.00 |
| 71 | 8 | "The 21-Second Excitation" | Mark Cendrowski | Story by : Chuck Lorre & Bill Prady & Jim Reynolds Teleplay by : Lee Aronsohn & Steven Molaro & Steve Holland | November 11, 2010 (2010-11-11) | 3X6658 | 13.11 |
| 72 | 9 | "The Boyfriend Complexity" | Mark Cendrowski | Story by : Chuck Lorre & Lee Aronsohn & Jim Reynolds Teleplay by : Bill Prady & Steven Molaro & Dave Goetsch | November 18, 2010 (2010-11-18) | 3X6659 | 13.02 |
| 73 | 10 | "The Alien Parasite Hypothesis" | Mark Cendrowski | Story by : Chuck Lorre & Steven Molaro & Steve Holland Teleplay by : Lee Aronsohn & Jim Reynolds & Maria Ferrari | December 9, 2010 (2010-12-09) | 3X6660 | 12.03 |
| 74 | 11 | "The Justice League Recombination" | Mark Cendrowski | Story by : Chuck Lorre & Lee Aronsohn & Maria Ferrari Teleplay by : Bill Prady & Steven Molaro & Steve Holland | December 16, 2010 (2010-12-16) | 3X6661 | 13.24 |
| 75 | 12 | "The Bus Pants Utilization" | Mark Cendrowski | Story by : Chuck Lorre & Lee Aronsohn & Maria Ferrari Teleplay by : Bill Prady & Steven Molaro & Eric Kaplan | January 6, 2011 (2011-01-06) | 3X6662 | 13.98 |
| 76 | 13 | "The Love Car Displacement" | Anthony Rich | Story by : Chuck Lorre & Bill Prady & Dave Goetsch Teleplay by : Lee Aronsohn & Steven Molaro & Steve Holland | January 20, 2011 (2011-01-20) | 3X6663 | 13.63 |
| 77 | 14 | "The Thespian Catalyst" | Mark Cendrowski | Story by : Chuck Lorre & Lee Aronsohn & Jim Reynolds Teleplay by : Bill Prady & Steven Molaro & Maria Ferrari | February 3, 2011 (2011-02-03) | 3X6664 | 13.83 |
| 78 | 15 | "The Benefactor Factor" | Mark Cendrowski | Story by : Bill Prady & Lee Aronsohn & Dave Goetsch Teleplay by : Chuck Lorre & Eric Kaplan & Steve Holland | February 10, 2011 (2011-02-10) | 3X6665 | 12.79 |
| 79 | 16 | "The Cohabitation Formulation" | Mark Cendrowski | Story by : Chuck Lorre & Lee Aronsohn & Dave Goetsch Teleplay by : Bill Prady & Steven Molaro & Jim Reynolds | February 17, 2011 (2011-02-17) | 3X6666 | 12.41 |
| 80 | 17 | "The Toast Derivation" | Mark Cendrowski | Story by : Bill Prady & Dave Goetsch & Maria Ferrari Teleplay by : Chuck Lorre & Steven Molaro & Jim Reynolds | February 24, 2011 (2011-02-24) | 3X6667 | 12.35 |
| 81 | 18 | "The Prestidigitation Approximation" | Mark Cendrowski | Story by : Bill Prady & Steve Holland & Eddie Gorodetsky Teleplay by : Chuck Lorre & Steven Molaro & Eric Kaplan | March 10, 2011 (2011-03-10) | 3X6668 | 12.06 |
| 82 | 19 | "The Zarnecki Incursion" | Peter Chakos | Story by : Chuck Lorre & Steven Molaro & Maria Ferrari Teleplay by : Bill Prady & Dave Goetsch & Jim Reynolds | March 31, 2011 (2011-03-31) | 3X6669 | 11.92 |
| 83 | 20 | "The Herb Garden Germination" | Mark Cendrowski | Story by : Chuck Lorre & Eric Kaplan & Eddie Gorodetsky Teleplay by : Bill Prady & Steven Molaro & Steve Holland | April 7, 2011 (2011-04-07) | 3X6670 | 11.40 |
| 84 | 21 | "The Agreement Dissection" | Mark Cendrowski | Story by : Bill Prady & Dave Goetsch & Eddie Gorodetsky Teleplay by : Chuck Lorre & Steven Molaro & Eric Kaplan | April 28, 2011 (2011-04-28) | 3X6671 | 10.71 |
| 85 | 22 | "The Wildebeest Implementation" | Mark Cendrowski | Story by : Chuck Lorre & Steven Molaro & Eric Kaplan Teleplay by : Bill Prady & Eddie Gorodetsky & Maria Ferrari | May 5, 2011 (2011-05-05) | 3X6672 | 10.50 |
| 86 | 23 | "The Engagement Reaction" | Howard Murray | Story by : Bill Prady & Eric Kaplan & Jim Reynolds Teleplay by : Chuck Lorre & Steven Molaro & Steve Holland | May 12, 2011 (2011-05-12) | 3X6673 | 10.78 |
| 87 | 24 | "The Roommate Transmogrification" | Mark Cendrowski | Story by : Chuck Lorre & Steven Molaro & Eddie Gorodetsky Teleplay by : Bill Prady & Eric Kaplan & Jim Reynolds | May 19, 2011 (2011-05-19) | 3X6674 | 11.30 |

### Season 5 (2011–12)

| No. overall | No. in season | Title | Directed by | Written by | Original release date | Prod. code | US viewers (millions) |
| 88 | 1 | "The Skank Reflex Analysis" | Mark Cendrowski | Story by : Eric Kaplan & Maria Ferrari & Anthony Del Broccolo Teleplay by : Chuck Lorre & Bill Prady & Steven Molaro | September 22, 2011 (2011-09-22) | 3X6851 | 14.30 |
| 89 | 2 | "The Infestation Hypothesis" | Mark Cendrowski | Story by : Bill Prady & Steven Molaro & Maria Ferrari Teleplay by : Chuck Lorre & Jim Reynolds & Steve Holland | September 22, 2011 (2011-09-22) | 3X6852 | 14.94 |
| 90 | 3 | "The Pulled Groin Extrapolation" | Mark Cendrowski | Story by : Chuck Lorre & Eric Kaplan & Jim Reynolds Teleplay by : Bill Prady & Steven Molaro & Dave Goetsch | September 29, 2011 (2011-09-29) | 3X6853 | 14.74 |
| 91 | 4 | "The Wiggly Finger Catalyst" | Mark Cendrowski | Story by : Chuck Lorre & Dave Goetsch & Anthony Del Broccolo Teleplay by : Bill Prady & Steven Molaro & Steve Holland | October 6, 2011 (2011-10-06) | 3X6854 | 13.92 |
| 92 | 5 | "The Russian Rocket Reaction" | Mark Cendrowski | Story by : Bill Prady & Steven Molaro & Jim Reynolds Teleplay by : Chuck Lorre & Eric Kaplan & Maria Ferrari | October 13, 2011 (2011-10-13) | 3X6855 | 13.58 |
| 93 | 6 | "The Rhinitis Revelation" | Howard Murray | Story by : Chuck Lorre & Eric Kaplan & Steve Holland Teleplay by : Bill Prady & Steven Molaro & Jim Reynolds | October 20, 2011 (2011-10-20) | 3X6857 | 14.93 |
| 94 | 7 | "The Good Guy Fluctuation" | Mark Cendrowski | Story by : Chuck Lorre & Dave Goetsch & Maria Ferrari Teleplay by : Bill Prady & Steven Molaro & Steve Holland | October 27, 2011 (2011-10-27) | 3X6856 | 14.54 |
| 95 | 8 | "The Isolation Permutation" | Mark Cendrowski | Story by : Chuck Lorre & Eric Kaplan & Tara Hernandez Teleplay by : Bill Prady & Steven Molaro & Steve Holland | November 3, 2011 (2011-11-03) | 3X6858 | 15.98 |
| 96 | 9 | "The Ornithophobia Diffusion" | Mark Cendrowski | Story by : Chuck Lorre & Dave Goetsch & Anthony Del Broccolo Teleplay by : Bill Prady & Steven Molaro & Eric Kaplan | November 10, 2011 (2011-11-10) | 3X6859 | 15.89 |
| 97 | 10 | "The Flaming Spittoon Acquisition" | Mark Cendrowski | Story by : Chuck Lorre & Steven Molaro & Dave Goetsch Teleplay by : Bill Prady & Jim Reynolds & Steve Holland | November 17, 2011 (2011-11-17) | 3X6860 | 15.05 |
| 98 | 11 | "The Speckerman Recurrence" | Anthony Rich | Story by : Chuck Lorre & Bill Prady & Steve Holland Teleplay by : Steven Molaro & Eric Kaplan & Anthony Del Broccolo | December 8, 2011 (2011-12-08) | 3X6861 | 14.02 |
| 99 | 12 | "The Shiny Trinket Maneuver" | Mark Cendrowski | Story by : Chuck Lorre & Steve Holland & Tara Hernandez Teleplay by : Bill Prady & Steven Molaro & Jim Reynolds | January 12, 2012 (2012-01-12) | 3X6862 | 16.13 |
| 100 | 13 | "The Recombination Hypothesis" | Mark Cendrowski | Story by : Chuck Lorre Teleplay by : Bill Prady & Steven Molaro | January 19, 2012 (2012-01-19) | 3X6863 | 15.83 |
| 101 | 14 | "The Beta Test Initiation" | Mark Cendrowski | Story by : Chuck Lorre & Steven Molaro & Eric Kaplan Teleplay by : Bill Prady & Dave Goetsch & Maria Ferrari | January 26, 2012 (2012-01-26) | 3X6864 | 16.13 |
| 102 | 15 | "The Friendship Contraction" | Mark Cendrowski | Story by : Chuck Lorre & Eric Kaplan & Jim Reynolds Teleplay by : Bill Prady & Steven Molaro & Steve Holland | February 2, 2012 (2012-02-02) | 3X6865 | 16.54 |
| 103 | 16 | "The Vacation Solution" | Mark Cendrowski | Story by : Chuck Lorre & Anthony Del Broccolo & Tara Hernandez Teleplay by : Bill Prady & Steven Molaro & Maria Ferrari | February 9, 2012 (2012-02-09) | 3X6866 | 16.21 |
| 104 | 17 | "The Rothman Disintegration" | Mark Cendrowski | Story by : Chuck Lorre & Bill Prady & Steve Holland Teleplay by : Steven Molaro & Eric Kaplan & Jim Reynolds | February 16, 2012 (2012-02-16) | 3X6867 | 15.65 |
| 105 | 18 | "The Werewolf Transformation" | Mark Cendrowski | Story by : Chuck Lorre & Todd Craig & Gary Torvinen Teleplay by : Bill Prady & Steven Molaro & Jim Reynolds & Maria Ferrari | February 23, 2012 (2012-02-23) | 3X6868 | 16.20 |
| 106 | 19 | "The Weekend Vortex" | Mark Cendrowski | Story by : Chuck Lorre & Bill Prady & Tara Hernandez Teleplay by : Steven Molaro & Eric Kaplan & Steve Holland | March 8, 2012 (2012-03-08) | 3X6869 | 15.04 |
| 107 | 20 | "The Transporter Malfunction" | Mark Cendrowski | Story by : Chuck Lorre & Bill Prady & Maria Ferrari Teleplay by : Steven Molaro & Jim Reynolds & Steve Holland | March 29, 2012 (2012-03-29) | 3X6870 | 13.96 |
| 108 | 21 | "The Hawking Excitation" | Mark Cendrowski | Story by : Bill Prady & Steven Molaro & Steve Holland Teleplay by : Chuck Lorre & Eric Kaplan & Maria Ferrari | April 5, 2012 (2012-04-05) | 3X6871 | 13.29 |
| 109 | 22 | "The Stag Convergence" | Peter Chakos | Story by : Billy Prady & Steve Holland & Eric Kaplan Teleplay by : Chuck Lorre & Steven Molaro & Jim Reynolds | April 26, 2012 (2012-04-26) | 3X6872 | 12.65 |
| 110 | 23 | "The Launch Acceleration" | Mark Cendrowski | Story by : Chuck Lorre & Steven Molaro & Jim Reynolds Teleplay by : Bill Prady & Steve Holland & Maria Ferrari | May 3, 2012 (2012-05-03) | 3X6873 | 13.91 |
| 111 | 24 | "The Countdown Reflection" | Mark Cendrowski | Story by : Bill Prady & Eric Kaplan & Steve Holland Teleplay by : Chuck Lorre & Steven Molaro & Jim Reynolds | May 10, 2012 (2012-05-10) | 3X6874 | 13.72 |

### Season 6 (2012–13)

| No. overall | No. in season | Title | Directed by | Written by | Original release date | Prod. code | U.S. viewers (millions) |
| 112 | 1 | "The Date Night Variable" | Mark Cendrowski | Story by : Chuck Lorre & Eric Kaplan & Steve Holland Teleplay by : Steven Molaro & Jim Reynolds & Maria Ferrari | September 27, 2012 (2012-09-27) | 3X7601 | 15.66 |
| 113 | 2 | "The Decoupling Fluctuation" | Mark Cendrowski | Story by : Chuck Lorre & Jim Reynolds & Maria Ferrari Teleplay by : Steven Molaro & Eric Kaplan & Steve Holland | October 4, 2012 (2012-10-04) | 3X7602 | 15.18 |
| 114 | 3 | "The Higgs Boson Observation" | Mark Cendrowski | Story by : Steven Molaro & Dave Goetsch & Steve Holland Teleplay by : Chuck Lorre & Jim Reynolds & Maria Ferrari | October 11, 2012 (2012-10-11) | 3X7603 | 14.23 |
| 115 | 4 | "The Re-Entry Minimization" | Mark Cendrowski | Story by : Bill Prady & Jim Reynolds & Anthony Del Broccolo Teleplay by : Chuck Lorre & Steven Molaro & Eric Kaplan | October 18, 2012 (2012-10-18) | 3X7604 | 15.73 |
| 116 | 5 | "The Holographic Excitation" | Mark Cendrowski | Story by : Chuck Lorre & Eric Kaplan & Jeremy Howe Teleplay by : Steven Molaro & Steve Holland & Maria Ferrari | October 25, 2012 (2012-10-25) | 3X7605 | 15.82 |
| 117 | 6 | "The Extract Obliteration" | Mark Cendrowski | Story by : Chuck Lorre & Bill Prady & Steve Holland Teleplay by : Steven Molaro & Jim Reynolds & Eric Kaplan | November 1, 2012 (2012-11-01) | 3X7606 | 15.90 |
| 118 | 7 | "The Habitation Configuration" | Mark Cendrowski | Story by : Chuck Lorre & Eric Kaplan & Jim Reynolds Teleplay by : Steven Molaro & Steve Holland & Maria Ferrari | November 8, 2012 (2012-11-08) | 3X7607 | 16.68 |
| 119 | 8 | "The 43 Peculiarity" | Mark Cendrowski | Story by : Chuck Lorre & Dave Goetsch & Anthony Del Broccolo Teleplay by : Steven Molaro & Jim Reynolds & Steve Holland | November 15, 2012 (2012-11-15) | 3X7608 | 17.63 |
| 120 | 9 | "The Parking Spot Escalation" | Peter Chakos | Story by : Chuck Lorre & Eric Kaplan & Adam Faberman Teleplay by : Steven Molaro & Steve Holland & Maria Ferrari | November 29, 2012 (2012-11-29) | 3X7609 | 17.25 |
| 121 | 10 | "The Fish Guts Displacement" | Mark Cendrowski | Story by : Chuck Lorre & Bill Prady & Tara Hernandez Teleplay by : Steven Molaro & Eric Kaplan & Jim Reynolds | December 6, 2012 (2012-12-06) | 3X7610 | 16.94 |
| 122 | 11 | "The Santa Simulation" | Mark Cendrowski | Story by : Chuck Lorre & Eric Kaplan & Steve Holland Teleplay by : Steven Molaro & Jim Reynolds & Maria Ferrari | December 13, 2012 (2012-12-13) | 3X7611 | 16.77 |
| 123 | 12 | "The Egg Salad Equivalency" | Mark Cendrowski | Story by : Chuck Lorre & Eric Kaplan & Jim Reynolds Teleplay by : Steven Molaro & Bill Prady & Steve Holland | January 3, 2013 (2013-01-03) | 3X7612 | 19.25 |
| 124 | 13 | "The Bakersfield Expedition" | Mark Cendrowski | Story by : Chuck Lorre & Jim Reynolds & Steve Holland Teleplay by : Steven Molaro & Eric Kaplan & Maria Ferrari | January 10, 2013 (2013-01-10) | 3X7613 | 20.00 |
| 125 | 14 | "The Cooper/Kripke Inversion" | Mark Cendrowski | Story by : Chuck Lorre & Eric Kaplan & Anthony Del Broccolo Teleplay by : Steven Molaro & Jim Reynolds & Steve Holland | January 31, 2013 (2013-01-31) | 3X7614 | 17.76 |
| 126 | 15 | "The Spoiler Alert Segmentation" | Mark Cendrowski | Story by : Chuck Lorre & Eric Kaplan & Steve Holland Teleplay by : Steven Molaro & Maria Ferrari & Adam Faberman | February 7, 2013 (2013-02-07) | 3X7615 | 18.98 |
| 127 | 16 | "The Tangible Affection Proof" | Mark Cendrowski | Story by : Chuck Lorre & Bill Prady & Steve Holland Teleplay by : Steven Molaro & Jim Reynolds & Tara Hernandez | February 14, 2013 (2013-02-14) | 3X7616 | 17.89 |
| 128 | 17 | "The Monster Isolation" | Mark Cendrowski | Story by : Chuck Lorre & Dave Goetsch & Maria Ferrari Teleplay by : Steven Molaro & Eric Kaplan & Steve Holland | February 21, 2013 (2013-02-21) | 3X7617 | 17.62 |
| 129 | 18 | "The Contractual Obligation Implementation" | Mark Cendrowski | Story by : Chuck Lorre & Eric Kaplan & Steve Holland Teleplay by : Steven Molaro & Jim Reynolds & Maria Ferrari | March 7, 2013 (2013-03-07) | 3X7618 | 17.63 |
| 130 | 19 | "The Closet Reconfiguration" | Anthony Rich | Story by : Chuck Lorre & Jim Reynolds & Maria Ferrari Teleplay by : Steven Molaro & Steve Holland & Eric Kaplan | March 14, 2013 (2013-03-14) | 3X7619 | 15.90 |
| 131 | 20 | "The Tenure Turbulence" | Mark Cendrowski | Story by : Steven Molaro & Eric Kaplan & Maria Ferrari Teleplay by : Chuck Lorre & Steve Holland & Jim Reynolds | April 4, 2013 (2013-04-04) | 3X7620 | 17.24 |
| 132 | 21 | "The Closure Alternative" | Mark Cendrowski | Story by : Chuck Lorre & Bill Prady & Tara Hernandez Teleplay by : Steven Molaro & Jim Reynolds & Steve Holland | April 25, 2013 (2013-04-25) | 3X7621 | 15.05 |
| 133 | 22 | "The Proton Resurgence" | Mark Cendrowski | Story by : Chuck Lorre & Jim Reynolds & Steve Holland Teleplay by : Steven Molaro & Eric Kaplan & Maria Ferrari | May 2, 2013 (2013-05-02) | 3X7622 | 16.29 |
| 134 | 23 | "The Love Spell Potential" | Anthony Rich | Story by : Chuck Lorre & Jim Reynolds & Maria Ferrari Teleplay by : Steven Molaro & Eric Kaplan & Steve Holland | May 9, 2013 (2013-05-09) | 3X7623 | 16.30 |
| 135 | 24 | "The Bon Voyage Reaction" | Mark Cendrowski | Story by : Steven Molaro & Steve Holland & Tara Hernandez Teleplay by : Chuck Lorre & Jim Reynolds & Maria Ferrari | May 16, 2013 (2013-05-16) | 3X7624 | 15.48 |

### Season 7 (2013–14)

| No. overall | No. in season | Title | Directed by | Written by | Original release date | Prod. code | U.S. viewers (millions) |
| 136 | 1 | "The Hofstadter Insufficiency" | Mark Cendrowski | Story by : Chuck Lorre & Steven Molaro & Tara Hernandez Teleplay by : Eric Kaplan & Jim Reynolds & Steve Holland | September 26, 2013 (2013-09-26) | 4X5301 | 18.99 |
| 137 | 2 | "The Deception Verification" | Mark Cendrowski | Story by : Chuck Lorre & Eric Kaplan & Jim Reynolds Teleplay by : Steven Molaro & Steve Holland & Maria Ferrari | September 26, 2013 (2013-09-26) | 4X5302 | 20.44 |
| 138 | 3 | "The Scavenger Vortex" | Mark Cendrowski | Story by : Dave Goetsch & Eric Kaplan & Steve Holland Teleplay by : Steven Molaro & Jim Reynolds & Maria Ferrari | October 3, 2013 (2013-10-03) | 4X5303 | 18.22 |
| 139 | 4 | "The Raiders Minimization" | Mark Cendrowski | Story by : Chuck Lorre & Jim Reynolds & Tara Hernandez Teleplay by : Steven Molaro & Steve Holland & Maria Ferrari | October 10, 2013 (2013-10-10) | 4X5304 | 17.64 |
| 140 | 5 | "The Workplace Proximity" | Mark Cendrowski | Story by : Steven Molaro & Steve Holland & Maria Ferrari Teleplay by : Chuck Lorre & Eric Kaplan & Jim Reynolds | October 17, 2013 (2013-10-17) | 4X5305 | 17.80 |
| 141 | 6 | "The Romance Resonance" | Mark Cendrowski | Story by : Eric Kaplan & Jim Reynolds & Tara Hernandez Teleplay by : Steven Molaro & Steve Holland & Maria Ferrari | October 24, 2013 (2013-10-24) | 4X5306 | 16.98 |
| 142 | 7 | "The Proton Displacement" | Mark Cendrowski | Story by : Chuck Lorre & Maria Ferrari & Anthony Del Broccolo Teleplay by : Steven Molaro & Eric Kaplan & Jim Reynolds | November 7, 2013 (2013-11-07) | 4X5307 | 16.89 |
| 143 | 8 | "The Itchy Brain Simulation" | Mark Cendrowski | Story by : Steven Molaro & Bill Prady & Jim Reynolds Teleplay by : Eric Kaplan & Steve Holland & Maria Ferrari | November 14, 2013 (2013-11-14) | 4X5308 | 18.30 |
| 144 | 9 | "The Thanksgiving Decoupling" | Mark Cendrowski | Story by : Eric Kaplan & Steve Holland & Maria Ferrari Teleplay by : Steven Molaro & Jim Reynolds & Jeremy Howe | November 21, 2013 (2013-11-21) | 4X5309 | 18.94 |
| 145 | 10 | "The Discovery Dissipation" | Mark Cendrowski | Story by : Eric Kaplan & Jim Reynolds & Maria Ferrari Teleplay by : Steven Molaro & Steve Holland & Adam Faberman | December 5, 2013 (2013-12-05) | 4X5310 | 15.63 |
| 146 | 11 | "The Cooper Extraction" | Mark Cendrowski | Story by : Steven Molaro & Eric Kaplan & Maria Ferrari Teleplay by : Jim Reynolds & Steve Holland & Tara Hernandez | December 12, 2013 (2013-12-12) | 4X5311 | 17.68 |
| 147 | 12 | "The Hesitation Ramification" | Mark Cendrowski | Story by : Dave Goetsch & Jim Reynolds & Tara Hernandez Teleplay by : Steven Molaro & Steve Holland & Maria Ferrari | January 2, 2014 (2014-01-02) | 4X5312 | 19.20 |
| 148 | 13 | "The Occupation Recalibration" | Mark Cendrowski | Story by : Eric Kaplan & Maria Ferrari & Tara Hernandez Teleplay by : Steven Molaro & Jim Reynolds & Steve Holland | January 9, 2014 (2014-01-09) | 4X5313 | 20.35 |
| 149 | 14 | "The Convention Conundrum" | Mark Cendrowski | Story by : Eric Kaplan & Jim Reynolds & Adam Faberman Teleplay by : Steven Molaro & Dave Goetsch & Steve Holland | January 30, 2014 (2014-01-30) | 4X5315 | 19.05 |
| 150 | 15 | "The Locomotive Manipulation" | Mark Cendrowski | Story by : Jim Reynolds & Steve Holland & Tara Hernandez Teleplay by : Steven Molaro & Eric Kaplan & Maria Ferrari | February 6, 2014 (2014-02-06) | 4X5314 | 17.53 |
| 151 | 16 | "The Table Polarization" | Gay Linvill | Story by : Steven Molaro & Maria Ferrari & Tara Hernandez Teleplay by : Chuck Lorre & Jim Reynolds & Steve Holland | February 27, 2014 (2014-02-27) | 4X5316 | 17.73 |
| 152 | 17 | "The Friendship Turbulence" | Mark Cendrowski | Story by : Steven Molaro & Eric Kaplan & Tara Hernandez Teleplay by : Jim Reynolds & Steve Holland & Maria Ferrari | March 6, 2014 (2014-03-06) | 4X5318 | 18.09 |
| 153 | 18 | "The Mommy Observation" | Mark Cendrowski | Story by : Jim Reynolds & Steve Holland & Maria Ferrari Teleplay by : Steven Molaro & Eric Kaplan & Anthony Del Broccolo | March 13, 2014 (2014-03-13) | 4X5319 | 17.34 |
| 154 | 19 | "The Indecision Amalgamation" | Anthony Rich | Story by : Bill Prady & Eric Kaplan & Jim Reynolds Teleplay by : Steven Molaro & Dave Goetsch & Steve Holland | April 3, 2014 (2014-04-03) | 4X5320 | 17.73 |
| 155 | 20 | "The Relationship Diremption" | Mark Cendrowski | Story by : Steven Molaro & Bill Prady & Jim Reynolds Teleplay by : Chuck Lorre & Eric Kaplan & Steve Holland | April 10, 2014 (2014-04-10) | 4X5321 | 16.49 |
| 156 | 21 | "The Anything Can Happen Recurrence" | Mark Cendrowski | Story by : Steven Molaro & Eric Kaplan & Adam Faberman Teleplay by : Jim Reynolds & Steve Holland & Tara Hernandez | April 24, 2014 (2014-04-24) | 4X5322 | 16.44 |
| 157 | 22 | "The Proton Transmogrification" | Mark Cendrowski | Story by : Jim Reynolds & Maria Ferrari & Jeremy Howe Teleplay by : Steven Molaro & Eric Kaplan & Steve Holland | May 1, 2014 (2014-05-01) | 4X5317 | 16.07 |
| 158 | 23 | "The Gorilla Dissolution" | Peter Chakos | Story by : Chuck Lorre & Jim Reynolds & Jeremy Howe Teleplay by : Steven Molaro & Steve Holland & Eric Kaplan | May 8, 2014 (2014-05-08) | 4X5323 | 14.42 |
| 159 | 24 | "The Status Quo Combustion" | Mark Cendrowski | Story by : Eric Kaplan & Jim Reynolds & Jeremy Howe Teleplay by : Steven Molaro & Steve Holland & Tara Hernandez | May 15, 2014 (2014-05-15) | 4X5324 | 16.73 |

### Season 8 (2014–15)

| No. overall | No. in season | Title | Directed by | Written by | Original release date | Prod. code | U.S. viewers (millions) |
| 160 | 1 | "The Locomotion Interruption" | Mark Cendrowski | Story by : Jim Reynolds & Maria Ferrari & Tara Hernandez Teleplay by : Steven Molaro & Steve Holland & Eric Kaplan | September 22, 2014 (2014-09-22) | 4X6751 | 18.08 |
| 161 | 2 | "The Junior Professor Solution" | Mark Cendrowski | Story by : Steven Molaro & Eric Kaplan & Steve Holland Teleplay by : Jim Reynolds & Maria Ferrari & Tara Hernandez | September 22, 2014 (2014-09-22) | 4X6752 | 18.30 |
| 162 | 3 | "The First Pitch Insufficiency" | Mark Cendrowski | Story by : Chuck Lorre & Jim Reynolds & Anthony Del Broccolo Teleplay by : Steven Molaro & Steve Holland & Maria Ferrari | September 29, 2014 (2014-09-29) | 4X6753 | 16.44 |
| 163 | 4 | "The Hook-Up Reverberation" | Mark Cendrowski | Story by : Steve Holland & Maria Ferrari & Tara Hernandez Teleplay by : Steven Molaro & Eric Kaplan & Jim Reynolds | October 6, 2014 (2014-10-06) | 4X6754 | 15.94 |
| 164 | 5 | "The Focus Attenuation" | Mark Cendrowski | Story by : Jim Reynolds & Maria Ferrari & Adam Faberman Teleplay by : Steven Molaro & Eric Kaplan & Steve Holland | October 13, 2014 (2014-10-13) | 4X6755 | 15.63 |
| 165 | 6 | "The Expedition Approximation" | Mark Cendrowski | Story by : Steven Molaro & Dave Goetsch & Tara Hernandez Teleplay by : Jim Reynolds & Steve Holland & Maria Ferrari | October 20, 2014 (2014-10-20) | 4X6756 | 16.02 |
| 166 | 7 | "The Misinterpretation Agitation" | Mark Cendrowski | Story by : Chuck Lorre & Eric Kaplan & Jim Reynolds Teleplay by : Steven Molaro & Steve Holland & Maria Ferrari | October 30, 2014 (2014-10-30) | 4X6758 | 16.25 |
| 167 | 8 | "The Prom Equivalency" | Mark Cendrowski | Story by : Jim Reynolds & Steve Holland & Jeremy Howe Teleplay by : Steven Molaro & Eric Kaplan & Maria Ferrari | November 6, 2014 (2014-11-06) | 4X6757 | 16.56 |
| 168 | 9 | "The Septum Deviation" | Anthony Rich | Story by : Steven Molaro & Bill Prady & Maria Ferrari Teleplay by : Eric Kaplan & Steve Holland & Tara Hernandez | November 13, 2014 (2014-11-13) | 4X6759 | 16.90 |
| 169 | 10 | "The Champagne Reflection" | Mark Cendrowski | Story by : Steven Molaro & Tara Hernandez & David Saltzberg & Ph.D Teleplay by : Jim Reynolds & Steve Holland & Dave Goetsch | November 20, 2014 (2014-11-20) | 4X6760 | 14.61 |
| 170 | 11 | "The Clean Room Infiltration" | Mark Cendrowski | Story by : Maria Ferrari & Tara Hernandez & Jeremy Howe Teleplay by : Eric Kaplan & Jim Reynolds & Steve Holland | December 11, 2014 (2014-12-11) | 4X6761 | 15.49 |
| 171 | 12 | "The Space Probe Disintegration" | Mark Cendrowski | Story by : Bill Prady & Eric Kaplan & Jim Reynolds Teleplay by : Steven Molaro & Steve Holland & Maria Ferrari | January 8, 2015 (2015-01-08) | 4X6762 | 18.11 |
| 172 | 13 | "The Anxiety Optimization" | Mark Cendrowski | Story by : Eric Kaplan & Maria Ferrari & Adam Faberman Teleplay by : Jim Reynolds & Steve Holland & Tara Hernandez | January 29, 2015 (2015-01-29) | 4X6763 | 17.25 |
| 173 | 14 | "The Troll Manifestation" | Mark Cendrowski | Story by : Steven Molaro & Eric Kaplan & Tara Hernandez Teleplay by : Jim Reynolds & Steve Holland & Maria Ferrari | February 5, 2015 (2015-02-05) | 4X6765 | 17.09 |
| 174 | 15 | "The Comic Book Store Regeneration" | Mark Cendrowski | Story by : Jim Reynolds & Maria Ferrari & Jeremy Howe Teleplay by : Steven Molaro & Eric Kaplan & Steve Holland | February 19, 2015 (2015-02-19) | 4X6764 | 17.49 |
| 175 | 16 | "The Intimacy Acceleration" | Mark Cendrowski | Story by : Dave Goetsch & Eric Kaplan & Tara Hernandez Teleplay by : Steven Molaro & Jim Reynolds & Steve Holland | February 26, 2015 (2015-02-26) | 4X6766 | 16.67 |
| 176 | 17 | "The Colonization Application" | Mark Cendrowski | Story by : Dave Goetsch & Jim Reynolds & Tara Hernandez Teleplay by : Steven Molaro & Eric Kaplan & Maria Ferrari | March 5, 2015 (2015-03-05) | 4X6767 | 18.17 |
| 177 | 18 | "The Leftover Thermalization" | Mark Cendrowski | Story by : Steven Molaro & Maria Ferrari & Jeremy Howe Teleplay by : Eric Kaplan & Jim Reynolds & Steve Holland | March 12, 2015 (2015-03-12) | 4X6768 | 16.13 |
| 178 | 19 | "The Skywalker Incursion" | Mark Cendrowski | Story by : Jim Reynolds & Tara Hernandez & Jeremy Howe Teleplay by : Steven Molaro & Steve Holland & Maria Ferrari | April 2, 2015 (2015-04-02) | 4X6769 | 13.89 |
| 179 | 20 | "The Fortification Implementation" | Mark Cendrowski | Story by : Jim Reynolds & Saladin K. Patterson & Tara Hernandez Teleplay by : Steven Molaro & Steve Holland & Maria Ferrari | April 9, 2015 (2015-04-09) | 4X6770 | 14.78 |
| 180 | 21 | "The Communication Deterioration" | Mark Cendrowski | Story by : Dave Goetsch & Steve Holland & Jeremy Howe Teleplay by : Steven Molaro & Eric Kaplan & Jim Reynolds | April 16, 2015 (2015-04-16) | 4X6771 | 14.82 |
| 181 | 22 | "The Graduation Transmission" | Anthony Rich | Story by : Chuck Lorre & Dave Goetsch & Anthony Del Broccolo Teleplay by : Steven Molaro & Steve Holland & Eric Kaplan | April 23, 2015 (2015-04-23) | 4X6772 | 14.63 |
| 182 | 23 | "The Maternal Combustion" | Anthony Rich | Story by : Steven Molaro & Tara Hernandez & Jeremy Howe Teleplay by : Chuck Lorre & Jim Reynolds & Maria Ferrari | April 30, 2015 (2015-04-30) | 4X6773 | 13.85 |
| 183 | 24 | "The Commitment Determination" | Mark Cendrowski | Story by : Chuck Lorre & Jim Reynolds & Maria Ferrari Teleplay by : Steven Molaro & Steve Holland & Eric Kaplan | May 7, 2015 (2015-05-07) | 4X6774 | 14.64 |

### Season 9 (2015–16)

| No. overall | No. in season | Title | Directed by | Written by | Original release date | Prod. code | U.S. viewers (millions) |
| 184 | 1 | "The Matrimonial Momentum" | Mark Cendrowski | Story by : Chuck Lorre & Jim Reynolds & Maria Ferrari Teleplay by : Steven Molaro & Steve Holland & Eric Kaplan | September 21, 2015 (2015-09-21) | 4X7201 | 18.20 |
| 185 | 2 | "The Separation Oscillation" | Mark Cendrowski | Story by : Steven Molaro & Steve Holland & Tara Hernandez Teleplay by : Chuck Lorre & Jim Reynolds & Maria Ferrari | September 28, 2015 (2015-09-28) | 4X7202 | 15.23 |
| 186 | 3 | "The Bachelor Party Corrosion" | Mark Cendrowski | Story by : Dave Goetsch & Jim Reynolds & Jeremy Howe Teleplay by : Steven Molaro & Steve Holland & Eric Kaplan | October 5, 2015 (2015-10-05) | 4X7203 | 15.40 |
| 187 | 4 | "The 2003 Approximation" | Mark Cendrowski | Story by : Chuck Lorre & Steve Holland & Eric Kaplan Teleplay by : Steven Molaro & Maria Ferrari & Tara Hernandez | October 12, 2015 (2015-10-12) | 4X7204 | 14.96 |
| 188 | 5 | "The Perspiration Implementation" | Mark Cendrowski | Story by : Chuck Lorre & Eric Kaplan & Maria Ferrari Teleplay by : Steven Molaro & Jim Reynolds & Saladin K. Patterson | October 19, 2015 (2015-10-19) | 4X7205 | 14.68 |
| 189 | 6 | "The Helium Insufficiency" | Mark Cendrowski | Story by : Steve Holland & Maria Ferrari & Anthony Del Broccolo Teleplay by : Steven Molaro & Eric Kaplan & Jim Reynolds | October 26, 2015 (2015-10-26) | 4X7207 | 16.32 |
| 190 | 7 | "The Spock Resonance" | Nikki Lorre | Story by : Chuck Lorre & Jim Reynolds & Tara Hernandez Teleplay by : Steven Molaro & Steve Holland & Jeremy Howe | November 5, 2015 (2015-11-05) | 4X7206 | 14.81 |
| 191 | 8 | "The Mystery Date Observation" | Mark Cendrowski | Story by : Steven Molaro & Eric Kaplan & Jim Reynolds Teleplay by : Chuck Lorre & Steve Holland & Tara Hernandez | November 12, 2015 (2015-11-12) | 4X7208 | 14.92 |
| 192 | 9 | "The Platonic Permutation" | Mark Cendrowski | Story by : Jim Reynolds & Jeremy Howe & Tara Hernandez Teleplay by : Steve Holland & Maria Ferrari & Adam Faberman | November 19, 2015 (2015-11-19) | 4X7209 | 15.19 |
| 193 | 10 | "The Earworm Reverberation" | Mark Cendrowski | Story by : Eric Kaplan & Jim Reynolds & Saladin K. Patterson Teleplay by : Steven Molaro & Steve Holland & Jeremy Howe | December 10, 2015 (2015-12-10) | 4X7210 | 15.27 |
| 194 | 11 | "The Opening Night Excitation" | Mark Cendrowski | Story by : Steven Molaro & Eric Kaplan & Tara Hernandez Teleplay by : Steve Holland & Jim Reynolds & Maria Ferrari | December 17, 2015 (2015-12-17) | 4X7211 | 17.23 |
| 195 | 12 | "The Sales Call Sublimation" | Mark Cendrowski | Story by : Steve Holland & Jim Reynolds & Saladin K. Patterson Teleplay by : Steven Molaro & Maria Ferrari & Anthony Del Broccolo | January 7, 2016 (2016-01-07) | 4X7212 | 15.85 |
| 196 | 13 | "The Empathy Optimization" | Mark Cendrowski | Story by : Chuck Lorre & Eric Kaplan & Dave Goetsch Teleplay by : Steven Molaro & Steve Holland & Saladin K. Patterson | January 14, 2016 (2016-01-14) | 4X7213 | 15.75 |
| 197 | 14 | "The Meemaw Materialization" | Mark Cendrowski | Story by : Chuck Lorre & Jim Reynolds & Maria Ferrari Teleplay by : Steven Molaro & Steve Holland & Tara Hernandez | February 4, 2016 (2016-02-04) | 4X7214 | 15.29 |
| 198 | 15 | "The Valentino Submergence" | Mark Cendrowski | Story by : Steven Molaro & Jim Reynolds & Tara Hernandez Teleplay by : Steve Holland & Eric Kaplan & Jeremy Howe | February 11, 2016 (2016-02-11) | 4X7215 | 16.25 |
| 199 | 16 | "The Positive Negative Reaction" | Mark Cendrowski | Story by : Eric Kaplan & Jim Reynolds & Saladin K. Patterson Teleplay by : Steven Molaro & Steve Holland & Maria Ferrari | February 18, 2016 (2016-02-18) | 4X7216 | 15.24 |
| 200 | 17 | "The Celebration Experimentation" | Mark Cendrowski | Story by : Chuck Lorre & Eric Kaplan & Jeremy Howe Teleplay by : Steven Molaro & Steve Holland & Tara Hernandez | February 25, 2016 (2016-02-25) | 4X7217 | 15.94 |
| 201 | 18 | "The Application Deterioration" | Mark Cendrowski | Story by : Steven Molaro & Eric Kaplan & Adam Faberman Teleplay by : Steve Holland & Jim Reynolds & Maria Ferrari | March 10, 2016 (2016-03-10) | 4X7218 | 14.68 |
| 202 | 19 | "The Solder Excursion Diversion" | Mark Cendrowski | Story by : Bill Prady & Eric Kaplan & Maria Ferrari Teleplay by : Steven Molaro & Steve Holland & Saladin K. Patterson | March 31, 2016 (2016-03-31) | 4X7219 | 14.24 |
| 203 | 20 | "The Big Bear Precipitation" | Mark Cendrowski | Story by : Chuck Lorre & Dave Goetsch & Tara Hernandez Teleplay by : Steven Molaro & Steve Holland & Jim Reynolds | April 7, 2016 (2016-04-07) | 4X7220 | 13.50 |
| 204 | 21 | "The Viewing Party Combustion" | Mark Cendrowski | Story by : Eric Kaplan & Maria Ferrari & Jeremy Howe Teleplay by : Steven Molaro & Steve Holland & Tara Hernandez | April 21, 2016 (2016-04-21) | 4X7221 | 14.16 |
| 205 | 22 | "The Fermentation Bifurcation" | Nikki Lorre | Story by : Steven Molaro & Jim Reynolds & Anthony Del Broccolo Teleplay by : Chuck Lorre & Steve Holland & Tara Hernandez | April 28, 2016 (2016-04-28) | 4X7222 | 14.13 |
| 206 | 23 | "The Line Substitution Solution" | Anthony Rich | Story by : Steve Holland & Saladin K. Patterson & Tara Hernandez Teleplay by : Steven Molaro & Eric Kaplan & Maria Ferrari | May 5, 2016 (2016-05-05) | 4X7223 | 13.22 |
| 207 | 24 | "The Convergence Convergence" | Mark Cendrowski | Story by : Steven Molaro & Tara Hernandez & Adam Faberman Teleplay by : Chuck Lorre & Steve Holland & Jeremy Howe | May 12, 2016 (2016-05-12) | 4X7224 | 14.73 |

### Season 10 (2016–17)

| No. overall | No. in season | Title | Directed by | Written by | Original release date | Prod. code | U.S. viewers (millions) |
| 208 | 1 | "The Conjugal Conjecture" | Mark Cendrowski | Story by : Chuck Lorre & Steve Holland & Tara Hernandez Teleplay by : Steven Molaro & Eric Kaplan & Jim Reynolds | September 19, 2016 (2016-09-19) | T12.15303 | 15.82 |
| 209 | 2 | "The Military Miniaturization" | Mark Cendrowski | Story by : Chuck Lorre & Eric Kaplan & Jim Reynolds Teleplay by : Steven Molaro & Steve Holland & Maria Ferrari | September 26, 2016 (2016-09-26) | T12.15301 | 14.24 |
| 210 | 3 | "The Dependence Transcendence" | Mark Cendrowski | Story by : Steven Molaro & Saladin K. Patterson & Tara Hernandez Teleplay by : Steve Holland & Maria Ferrari & Jeremy Howe | October 3, 2016 (2016-10-03) | T12.15302 | 14.32 |
| 211 | 4 | "The Cohabitation Experimentation" | Mark Cendrowski | Story by : Chuck Lorre & Dave Goetsch & Maria Ferrari Teleplay by : Steven Molaro & Steve Holland & Tara Hernandez | October 10, 2016 (2016-10-10) | T12.15304 | 14.41 |
| 212 | 5 | "The Hot Tub Contamination" | Mark Cendrowski | Story by : Chuck Lorre & Maria Ferrari & Tara Hernandez Teleplay by : Steve Holland & Eric Kaplan & Jim Reynolds | October 17, 2016 (2016-10-17) | T12.15305 | 14.20 |
| 213 | 6 | "The Fetal Kick Catalyst" | Mark Cendrowski | Story by : Steve Holland & Tara Hernandez & Jeremy Howe Teleplay by : Steven Molaro & Saladin K. Patterson & Anthony Del Broccolo | October 27, 2016 (2016-10-27) | T12.15306 | 14.31 |
| 214 | 7 | "The Veracity Elasticity" | Mark Cendrowski | Story by : Steven Molaro & Eric Kaplan & Maria Ferrari Teleplay by : Steve Holland & Jim Reynolds & Adam Faberman | November 3, 2016 (2016-11-03) | T12.15307 | 14.18 |
| 215 | 8 | "The Brain Bowl Incubation" | Mark Cendrowski | Story by : Chuck Lorre & Steve Holland & Saladin K. Patterson Teleplay by : Steven Molaro & Maria Ferrari & Tara Hernandez | November 10, 2016 (2016-11-10) | T12.15308 | 14.47 |
| 216 | 9 | "The Geology Elevation" | Mark Cendrowski | Story by : Chuck Lorre & Erik Kaplan & Maria Ferrari Teleplay by : Steve Holland & Jim Reynolds & Jeremy Howe | November 17, 2016 (2016-11-17) | T12.15309 | 14.34 |
| 217 | 10 | "The Property Division Collision" | Mark Cendrowski | Story by : Steve Holland & Bill Prady & Steve Goetsch Teleplay by : Steven Molaro & Maria Ferrari & Tara Hernandez | December 1, 2016 (2016-12-01) | T12.15310 | 14.54 |
| 218 | 11 | "The Birthday Synchronicity" | Nikki Lorre | Story by : Chuck Lorre & Steve Holland & Maria Ferrari Teleplay by : Steven Molaro & Eric Kaplan & Tara Hernandez | December 15, 2016 (2016-12-15) | T12.15311 | 15.96 |
| 219 | 12 | "The Holiday Summation" | Mark Cendrowski | Story by : Steven Molaro & Eric Kaplan & Tara Hernandez Teleplay by : Steve Holland & Maria Ferrari & Jeremy Howe | January 5, 2017 (2017-01-05) | T12.15312 | 16.80 |
| 220 | 13 | "The Romance Recalibration" | Mark Cendrowski | Story by : Chuck Lorre & Dave Goetsch & Anthony Del Broccolo Teleplay by : Steven Molaro & Steve Holland & Saladin K. Patterson | January 19, 2017 (2017-01-19) | T12.15313 | 15.15 |
| 221 | 14 | "The Emotion Detection Automation" | Mark Cendrowski | Story by : Chuck Lorre & Steven Molaro & Eric Kaplan Teleplay by : Steve Holland & Jim Reynolds & Saladin K. Patterson | February 2, 2017 (2017-02-02) | T12.15314 | 14.66 |
| 222 | 15 | "The Locomotion Reverberation" | Mark Cendrowski | Story by : Chuck Lorre & Steve Holland & Jim Reynolds Teleplay by : Steven Molaro & Maria Ferrari & Tara Hernandez | February 9, 2017 (2017-02-09) | T12.15315 | 14.15 |
| 223 | 16 | "The Allowance Evaporation" | Mark Cendrowski | Story by : Eric Kaplan & Maria Ferrari & Jeremy Howe Teleplay by : Steven Molaro & Steve Holland & Jim Reynolds | February 16, 2017 (2017-02-16) | T12.15316 | 13.51 |
| 224 | 17 | "The Comic-Con Conundrum" | Mark Cendrowski | Story by : Eric Kaplan & Saladin K. Patterson & Tara Hernandez Teleplay by : Steven Molaro & Steve Holland & Maria Ferrari | February 23, 2017 (2017-02-23) | T12.15317 | 13.38 |
| 225 | 18 | "The Escape Hatch Identification" | Mark Cendrowski | Story by : Steven Molaro & Eric Kaplan & Anthony Del Broccolo Teleplay by : Steve Holland & Jim Reynolds & Tara Hernandez | March 9, 2017 (2017-03-09) | T12.15318 | 13.08 |
| 226 | 19 | "The Collaboration Fluctuation" | Mark Cendrowski | Story by : Chuck Lorre & Tara Hernandez & Giuseppe Graziano Teleplay by : Steven Molaro & Steve Holland & Dave Goetsch | March 30, 2017 (2017-03-30) | T12.15319 | 12.78 |
| 227 | 20 | "The Recollection Dissipation" | Mark Cendrowski | Story by : Eric Kaplan & Tara Hernandez & Jeremy Howe Teleplay by : Steven Molaro & Steve Holland & Maria Ferrari | April 6, 2017 (2017-04-06) | T12.15320 | 12.59 |
| 228 | 21 | "The Separation Agitation" | Mark Cendrowski | Story by : Steven Molaro & Jim Reynolds & Maria Ferrari Teleplay by : Steve Holland & Tara Hernandez & Jeremy Howe | April 13, 2017 (2017-04-13) | T12.15321 | 11.89 |
| 229 | 22 | "The Cognition Regeneration" | Mark Cendrowski | Story by : Steve Holland & Tara Hernandez & Jeremy Howe Teleplay by : Dave Goetsch & Eric Kaplan & Jim Reynolds | April 27, 2017 (2017-04-27) | T12.15322 | 12.52 |
| 230 | 23 | "The Gyroscopic Collapse" | Anthony Rich | Story by : Chuck Lorre & Steve Holland & Alex Ayers Teleplay by : Steven Molaro & Jim Reynolds & Saladin K. Patterson | May 4, 2017 (2017-05-04) | T12.15323 | 12.39 |
| 231 | 24 | "The Long Distance Dissonance" | Mark Cendrowski | Story by : Steven Molaro & Eric Kaplan & Jim Reynolds Teleplay by : Chuck Lorre & Steve Holland & Tara Hernandez | May 11, 2017 (2017-05-11) | T12.15324 | 12.99 |

### Season 11 (2017–18)

| No. overall | No. in season | Title | Directed by | Written by | Original release date | Prod. code | U.S. viewers (millions) |
| 232 | 1 | "The Proposal Proposal" | Mark Cendrowski | Story by : Chuck Lorre & Eric Kaplan & Jeremy Howe Teleplay by : Steve Holland & Maria Ferrari & Tara Hernandez | September 25, 2017 (2017-09-25) | T12.15601 | 17.65 |
| 233 | 2 | "The Retraction Reaction" | Mark Cendrowski | Story by : Steven Molaro & Steve Holland & Maria Ferrari Teleplay by : Dave Goetsch & Eric Kaplan & Anthony Del Broccolo | October 2, 2017 (2017-10-02) | T12.15602 | 14.06 |
| 234 | 3 | "The Relaxation Integration" | Mark Cendrowski | Story by : Chuck Lorre & Steve Holland & Adam Faberman Teleplay by : Maria Ferrari & Andy Gordon & Tara Hernandez | October 9, 2017 (2017-10-09) | T12.15603 | 13.13 |
| 235 | 4 | "The Explosion Implosion" | Mark Cendrowski | Story by : Bill Prady & Maria Ferrari & Tara Hernandez Teleplay by : Steve Holland & Eric Kaplan & Jeremy Howe | October 16, 2017 (2017-10-16) | T12.15604 | 13.07 |
| 236 | 5 | "The Collaboration Contamination" | Nikki Lorre | Story by : Steven Molaro & Steve Holland & Eric Kaplan Teleplay by : Dave Goetsch & Maria Ferrari & Jeremy Howe | October 23, 2017 (2017-10-23) | T12.15605 | 13.20 |
| 237 | 6 | "The Proton Regeneration" | Mark Cendrowski | Story by : Steven Molaro, Dave Goetsch, Alex Yonks Teleplay by : Dave Steve Holland, Andy Gordon, Jeremy Howe | November 2, 2017 (2017-11-02) | T12.15606 | 14.14 |
| 238 | 7 | "The Geology Methodology" | Mark Cendrowski | Story by : Steve Holland & Anthony Del Broccolo & Adam Faberman Teleplay by : Eric Kaplan & Maria Ferrari & Tara Hernandez | November 9, 2017 (2017-11-09) | T12.15607 | 13.80 |
| 239 | 8 | "The Tesla Recoil" | Anthony Rich | Story by : Chuck Lorre & Eric Kaplan & Tara Hernandez Teleplay by : Steve Holland & Maria Ferrari & Jeremy Howe | November 16, 2017 (2017-11-16) | T12.15608 | 13.44 |
| 240 | 9 | "The Bitcoin Entanglement" | Mark Cendrowski | Story by : Steve Holland & Andy Gordon & Jeremy Howe Teleplay by : Dave Goetsch & Maria Ferrari & Anthony Del Broccolo | November 30, 2017 (2017-11-30) | T12.15609 | 13.84 |
| 241 | 10 | "The Confidence Erosion" | Mark Cendrowski | Story by : Bill Prady & Maria Ferrari & Adam Faberman Teleplay by : Steve Holland & Eric Kaplan & Tara Hernandez | December 7, 2017 (2017-12-07) | T12.15610 | 14.41 |
| 242 | 11 | "The Celebration Reverberation" | Mark Cendrowski | Story by : Steve Holland & Eric Kaplan & Alex Ayers Teleplay by : Dave Goetsch & Maria Ferrari & Jeremy Howe | December 14, 2017 (2017-12-14) | T12.15611 | 13.74 |
| 243 | 12 | "The Matrimonial Metric" | Mark Cendrowski | Story by : Maria Ferrari & Tara Hernandez & Jeremy Howe Teleplay by : Steve Holland & Eric Kaplan & Andy Gordon | January 4, 2018 (2018-01-04) | T12.15612 | 16.16 |
| 244 | 13 | "The Solo Oscillation" | Mark Cendrowski | Story by : Chuck Lorre & Steve Holland & Anthony Del Broccolo Teleplay by : Eric Kaplan & Maria Ferrari & Jeremy Howe | January 11, 2018 (2018-01-11) | T12.15613 | 15.93 |
| 245 | 14 | "The Separation Triangulation" | Mark Cendrowski | Story by : Chuck Lorre & Eric Kaplan & Maria Ferrari Teleplay by : Steven Molaro & Steve Holland & Tara Hernandez | January 18, 2018 (2018-01-18) | T12.15614 | 14.92 |
| 246 | 15 | "The Novelization Correlation" | Mark Cendrowski | Story by : Steve Holland & Andy Gordon & Adam Faberman Teleplay by : Eric Kaplan & Maria Ferrari & Jeremy Howe | February 1, 2018 (2018-02-01) | T12.15615 | 14.69 |
| 247 | 16 | "The Neonatal Nomenclature" | Gay Linvill | Story by : Eric Kaplan & Maria Ferrari & Anthony Del Broccolo Teleplay by : Steve Holland & Tara Hernandez & Adam Faberman | March 1, 2018 (2018-03-01) | T12.15616 | 13.75 |
| 248 | 17 | "The Athenaeum Allocation" | Mark Cendrowski | Story by : Steve Holland & Steven Molaro & Tara Hernandez Teleplay by : Dave Goetsch & Eric Kaplan & Maria Ferrari | March 8, 2018 (2018-03-08) | T12.15617 | 13.88 |
| 249 | 18 | "The Gates Excitation" | Mark Cendrowski | Story by : Eric Kaplan & Maria Ferrari & Andy Gordon Teleplay by : Steve Holland & Tara Hernadnez & Jeremy Howe | March 29, 2018 (2018-03-29) | T12.15618 | 13.26 |
| 250 | 19 | "The Tenant Disassociation" | Mark Cendrowski | Story by : Steve Holland & Jeremy Howe & Trevor Alper Teleplay by : Dave Goetsch & Eric Kaplan & Maria Ferrari | April 5, 2018 (2018-04-05) | T12.15619 | 13.00 |
| 251 | 20 | "The Reclusive Potential" | Mark Cendrowski | Story by : Maria Ferrari & Anthony Del Broccolo & Tara Hernandez Teleplay by : Steve Holland & Eric Kaplan & Adam Faberman | April 12, 2018 (2018-04-12) | T12.15620 | 12.77 |
| 252 | 21 | "The Comet Polarization" | Mark Cendrowski | Story by : Steve Holland & Bill Prady & Eric Kaplan Teleplay by : Maria Ferrari & Andy Gordon & Tara Hernandez | April 19, 2018 (2018-04-19) | T12.15621 | 12.91 |
| 253 | 22 | "The Monetary Insufficiency" | Nikki Lorre | Story by : Dave Goetsch & Maria Ferrari & Tara Hernandez Teleplay by : Steve Holland & Eric Kaplan & Jeremy Howe | April 26, 2018 (2018-04-26) | T12.15622 | 11.79 |
| 254 | 23 | "The Sibling Realignment" | Mark Cendrowski | Story by : Steve Holland & Eric Kaplan & Anthony Del Broccolo Teleplay by : Dave Goetsch & Maria Ferrari & Jeremy Howe | May 3, 2018 (2018-05-03) | T12.15623 | 12.93 |
| 255 | 24 | "The Bow Tie Asymmetry" | Mark Cendrowski | Story by : Chuck Lorre & Steven Molaro & Maria Ferrari Teleplay by : Steve Holland & Eric Kaplan & Tara Hernandez | May 10, 2018 (2018-05-10) | T12.15624 | 15.51 |

### Season 12 (2018–19)

| No. overall | No. in season | Title | Directed by | Written by | Original release date | Prod. code | U.S. viewers (millions) |
| 256 | 1 | "The Conjugal Configuration" | Mark Cendrowski | Story by : Chuck Lorre & Eric Kaplan & Tara Hernandez Teleplay by : Steve Holland & Maria Ferrari & Jeremy Howe | September 24, 2018 (2018-09-24) | T12.16001 | 12.92 |
| 257 | 2 | "The Wedding Gift Wormhole" | Mark Cendrowski | Story by : Steve Holland & Steven Molaro & Maria Ferrari Teleplay by : Dave Goetsch & Eric Kaplan & Andy Gordon | September 27, 2018 (2018-09-27) | T12.16002 | 12.04 |
| 258 | 3 | "The Procreation Calculation" | Mark Cendrowski | Story by : Chuck Lorre & Tara Hernandez & Adam Faberman Teleplay by : Steve Holland & Maria Ferrari & Anthony Del Broccolo | October 4, 2018 (2018-10-04) | T12.16003 | 12.29 |
| 259 | 4 | "The Tam Turbulence" | Mark Cendrowski | Story by : Steve Holland & Steven Molaro & Maria Ferrari Teleplay by : Dave Goetsch & Eric Kaplan & Jeremy Howe | October 11, 2018 (2018-10-11) | T12.16004 | 12.94 |
| 260 | 5 | "The Planetarium Collision" | Mark Cendrowski | Story by : Eric Kaplan & Andy Gordon & Alex Ayers Teleplay by : Steve Holland & Maria Ferrari & Tara Hernandez | October 18, 2018 (2018-10-18) | T12.16005 | 12.22 |
| 261 | 6 | "The Imitation Perturbation" | Mark Cendrowski | Story by : Steve Holland & Maria Ferrari & Tara Hernandez Teleplay by : Eric Kaplan & Jeremy Howe & Adam Faberman | October 25, 2018 (2018-10-25) | T12.16006 | 12.99 |
| 262 | 7 | "The Grant Allocation Derivation" | Mark Cendrowski | Story by : Eric Kaplan & Anthony Del Broccolo & Alex Yonks Teleplay by : Steve Holland & Dave Goetsch & Maria Ferrari | November 1, 2018 (2018-11-01) | T12.16007 | 12.64 |
| 263 | 8 | "The Consummation Deviation" | Mark Cendrowski | Story by : Chuck Lorre & Steve Holland & Maria Ferrari Teleplay by : Eric Kaplan & Andy Gordon & Adam Faberman | November 8, 2018 (2018-11-08) | T12.16008 | 12.85 |
| 264 | 9 | "The Citation Negation" | Kristy Cecil | Story by : Eric Kaplan & Tara Hernandez & Jeremy Howe Teleplay by : Steve Holland & Dave Goetsch & Maria Ferrari | November 15, 2018 (2018-11-15) | T12.16009 | 12.56 |
| 265 | 10 | "The VCR Illumination" | Mark Cendrowski | Story by : Steve Holland & Steven Molaro & Bill Prady Teleplay by : Maria Ferrari & Andy Gordon & Jeremy Howe | December 6, 2018 (2018-12-06) | T12.16010 | 12.52 |
| 266 | 11 | "The Paintball Scattering" | Mark Cendrowski | Story by : Maria Ferrari & Tara Hernandez & Adam Faberman Teleplay by : Steve Holland & Eric Kaplan & Anthony Del Broccolo | January 3, 2019 (2019-01-03) | T12.16011 | 12.80 |
| 267 | 12 | "The Propagation Proposition" | Mark Cendrowski | Story by : Chuck Lorre & Steve Holland & Jeremy Howe Teleplay by : Maria Ferrari & Dave Goetsch & Eric Kaplan | January 10, 2019 (2019-01-10) | T12.16012 | 13.53 |
| 268 | 13 | "The Confirmation Polarization" | Mark Cendrowski | Story by : Eric Kaplan & Andy Gordon & Anthony Del Broccolo Teleplay by : Steve Holland & Maria Ferrari & Tara Hernandez | January 17, 2019 (2019-01-17) | T12.16013 | 13.32 |
| 269 | 14 | "The Meteorite Manifestation" | Mark Cendrowski | Story by : Chuck Lorre & Steve Holland & Maria Ferrari Teleplay by : Eric Kaplan & Tara Hernandez & Jeremy Howe | January 31, 2019 (2019-01-31) | T12.16014 | 13.66 |
| 270 | 15 | "The Donation Oscillation" | Mark Cendrowski | Story by : Bill Prady & Jeremy Howe & Adam Faberman Teleplay by : Steve Holland & Dave Goetsch & Maria Ferrari | February 7, 2019 (2019-02-07) | T12.16015 | 13.97 |
| 271 | 16 | "The D&D Vortex" | Mark Cendrowski | Story by : Steve Holland & Maria Ferrari & Anthony Del Broccolo Teleplay by : Eric Kaplan & Andy Gordon & Tara Hernandez | February 21, 2019 (2019-02-21) | T12.16016 | 13.48 |
| 272 | 17 | "The Conference Valuation" | Mark Cendrowski | Story by : Chuck Lorre & Steven Molaro & Eric Kaplan Teleplay by : Steve Holland & Maria Ferrari & Jeremy Howe | March 7, 2019 (2019-03-07) | T12.16017 | 12.99 |
| 273 | 18 | "The Laureate Accumulation" | Mark Cendrowski | Story by : Steve Holland & Adam Faberman & David Saltzberg Teleplay by : Dave Goetsch & Eric Kaplan & Maria Ferrari | April 4, 2019 (2019-04-04) | T12.16018 | 12.22 |
| 274 | 19 | "The Inspiration Deprivation" | Mark Cendrowski | Story by : Eric Kaplan & Maria Ferrari & Andy Gordon Teleplay by : Steve Holland & Anthony Del Broccolo & Tara Hernandez | April 18, 2019 (2019-04-18) | T12.16019 | 11.44 |
| 275 | 20 | "The Decision Reverberation" | Mark Cendrowski | Story by : Steven Molaro & Steve Holland & Tara Hernandez Teleplay by : Eric Kaplan & Maria Ferrari & Jermey Howe | April 25, 2019 (2019-04-25) | T12.16020 | 11.84 |
| 276 | 21 | "The Plagiarism Schism" | Nikki Lorre | Story by : Eric Kaplan & Maria Ferrari & Adam Faberman Teleplay by : Steve Holland & Dave Goetsch & Tara Hernandez | May 2, 2019 (2019-05-02) | T12.16021 | 12.48 |
| 277 | 22 | "The Maternal Conclusion" | Kristy Cecil | Story by : Steve Holland & Eric Kaplan & Jeremy Howe Teleplay by : Maria Ferrari & Andy Gordon & Anthony Del Broccolo | May 9, 2019 (2019-05-09) | T12.16022 | 12.59 |
| 278 | 23 | "The Change Constant" | Mark Cendrowski | Chuck Lorre & Steve Holland & Steven Molaro & Bill Prady & Dave Goetsch & Eric Kaplan & Maria Ferrari & Andy Gordon & Anthony Del Broccolo & Tara Hernandez & Jeremy Howe & Adam Faberman | May 16, 2019 (2019-05-16) | T12.16023 | 18.52 |
| 279 | 24 | "The Stockholm Syndrome" | Mark Cendrowski | Chuck Lorre & Steve Holland & Steven Molaro & Bill Prady & Dave Goetsch & Eric Kaplan & Maria Ferrari & Andy Gordon & Anthony Del Broccolo & Tara Hernandez & Jeremy Howe & Adam Faberman | May 16, 2019 (2019-05-16) | T12.16024 | 18.52 |

## Farewell special

| Title | Directed by | Written by | Original release date | Prod. code | US viewers (millions) |
| "Unraveling the Mystery: A Big Bang Farewell" | Chuck Lorre | Chuck Lorre & Steven Molaro & Steve Holland | May 16, 2019 (2019-05-16) | T12.16026 | 11.61 |
| Johnny Galecki and Kaley Cuoco host a retrospective of the series looking back on the most memorable moments. ||||||