# List of Billboard Hot 100 number ones of 2012

The Billboard Hot 100 is a chart that ranks the best-performing songs of the United States. Its data, published by Billboard magazine and compiled by Nielsen SoundScan, is based collectively on each single's weekly physical and digital sales, as well as airplay. Throughout 2012, a total of 12 singles claimed the number-one position. Although 13 singles topped the chart, singer Rihanna's "We Found Love", featuring Calvin Harris, had previously spent eight weeks atop the chart in late 2011, and thus excluded.
In 2012, six acts achieved their first US number-one single, either as a lead artist or a featured guest: Fun, Janelle Monáe, Gotye, Kimbra, Carly Rae Jepsen and Taylor Swift. Two collaboration singles topped the chart, "We Are Young" and "Somebody That I Used to Know". Throughout the year, no musical acts achieved multiple number-one singles. Gotye's "Somebody That I Used to Know", featuring Kimbra, became the year's biggest-selling single, topping the Billboard Year-End Hot 100.
Carly Rae Jepsen's "Call Me Maybe" and Maroon 5's "One More Night" tied for the longest-running number-one single of the year, both spending nine consecutive weeks atop the chart. Gotye's "Somebody That I Used to Know" was the second longest-running one, topping the Hot 100 for eight consecutive weeks. Both Fun's "We Are Young and Bruno Mars' "Locked Out of Heaven" spent a total of six weeks at number one, while Rihanna's "Diamonds", Kelly Clarkson's "Stronger (What Doesn't Kill You)" and Taylor Swift's "We Are Never Ever Getting Back Together", tied with three weeks atop the chart. "Diamonds" is Rihanna's twelfth Hot 100 number-one single, tying her with Madonna and The Supremes as the artists with the fifth-most number ones in the chart's history.

## Chart history

Key :
| † | Indicates best-performing single of 2012 |
| No. | Issue date | Song | Artist(s) |
| 1010 | January 7 | "Sexy and I Know It" | LMFAO |
| 1010 | January 14 | "Sexy and I Know It" | LMFAO |
| re | January 21 | "We Found Love" | Rihanna featuring Calvin Harris |
| re | January 28 | "We Found Love" | Rihanna featuring Calvin Harris |
| 1011 | February 4 | "Set Fire to the Rain" | Adele |
| 1011 | February 11 | "Set Fire to the Rain" | Adele |
| 1012 | February 18 | "Stronger (What Doesn't Kill You)" | Kelly Clarkson |
| 1012 | February 25 | "Stronger (What Doesn't Kill You)" | Kelly Clarkson |
| 1013 | March 3 | "Part of Me" | Katy Perry |
| re | March 10 | "Stronger (What Doesn't Kill You)" | Kelly Clarkson |
| 1014 | March 17 | "We Are Young" | Fun featuring Janelle Monáe |
| 1014 | March 24 | "We Are Young" | Fun featuring Janelle Monáe |
| 1014 | March 31 | "We Are Young" | Fun featuring Janelle Monáe |
| 1014 | April 7 | "We Are Young" | Fun featuring Janelle Monáe |
| 1014 | April 14 | "We Are Young" | Fun featuring Janelle Monáe |
| 1014 | April 21 | "We Are Young" | Fun featuring Janelle Monáe |
| 1015 | April 28 | "Somebody That I Used to Know"† | Gotye featuring Kimbra |
| 1015 | May 5 | "Somebody That I Used to Know"† | Gotye featuring Kimbra |
| 1015 | May 12 | "Somebody That I Used to Know"† | Gotye featuring Kimbra |
| 1015 | May 19 | "Somebody That I Used to Know"† | Gotye featuring Kimbra |
| 1015 | May 26 | "Somebody That I Used to Know"† | Gotye featuring Kimbra |
| 1015 | June 2 | "Somebody That I Used to Know"† | Gotye featuring Kimbra |
| 1015 | June 9 | "Somebody That I Used to Know"† | Gotye featuring Kimbra |
| 1015 | June 16 | "Somebody That I Used to Know"† | Gotye featuring Kimbra |
| 1016 | June 23 | "Call Me Maybe" | Carly Rae Jepsen |
| 1016 | June 30 | "Call Me Maybe" | Carly Rae Jepsen |
| 1016 | July 7 | "Call Me Maybe" | Carly Rae Jepsen |
| 1016 | July 14 | "Call Me Maybe" | Carly Rae Jepsen |
| 1016 | July 21 | "Call Me Maybe" | Carly Rae Jepsen |
| 1016 | July 28 | "Call Me Maybe" | Carly Rae Jepsen |
| 1016 | August 4 | "Call Me Maybe" | Carly Rae Jepsen |
| 1016 | August 11 | "Call Me Maybe" | Carly Rae Jepsen |
| 1016 | August 18 | "Call Me Maybe" | Carly Rae Jepsen |
| 1017 | August 25 | "Whistle" | Flo Rida |
| 1018 | September 1 | "We Are Never Ever Getting Back Together" | Taylor Swift |
| 1018 | September 8 | "We Are Never Ever Getting Back Together" | Taylor Swift |
| re | September 15 | "Whistle" | Flo Rida |
| re | September 22 | "We Are Never Ever Getting Back Together" | Taylor Swift |
| 1019 | September 29 | "One More Night" | Maroon 5 |
| 1019 | October 6 | "One More Night" | Maroon 5 |
| 1019 | October 13 | "One More Night" | Maroon 5 |
| 1019 | October 20 | "One More Night" | Maroon 5 |
| 1019 | October 27 | "One More Night" | Maroon 5 |
| 1019 | November 3 | "One More Night" | Maroon 5 |
| 1019 | November 10 | "One More Night" | Maroon 5 |
| 1019 | November 17 | "One More Night" | Maroon 5 |
| 1019 | November 24 | "One More Night" | Maroon 5 |
| 1020 | December 1 | "Diamonds" | Rihanna |
| 1020 | December 8 | "Diamonds" | Rihanna |
| 1020 | December 15 | "Diamonds" | Rihanna |
| 1021 | December 22 | "Locked Out of Heaven" | Bruno Mars |
| 1021 | December 29 | "Locked Out of Heaven" | Bruno Mars |

## Number-one artists

List of number-one artists by total weeks at number one :
| Position | Artist | Weeks at No. 1 |
| 1 | Carly Rae Jepsen | 9 |
| 1 | Maroon 5 | 9 |
| 3 | Gotye | 8 |
| 3 | Kimbra | 8 |
| 5 | Fun | 6 |
| 5 | Janelle Monáe | 6 |
| 7 | Rihanna | 5 |
| 8 | Kelly Clarkson | 3 |
| 8 | Taylor Swift | 3 |
| 10 | LMFAO | 2 |
| 10 | Calvin Harris | 2 |
| 10 | Adele | 2 |
| 10 | Flo Rida | 2 |
| 10 | Bruno Mars | 2 |
| 15 | Katy Perry | 1 |