# List of M Countdown Chart winners (2021)

The M Countdown Chart is a record chart on the South Korean Mnet television music program M Countdown. Every week, the show awards the best-performing single on the chart in the country during its live broadcast.
In 2021, 26 singles ranked number one on the chart and 23 music acts received first-place trophies. "Hwaa" by (G)I-dle, "Hot Sauce" by NCT Dream and "Sticker" by NCT 127 are the only songs to achieve a triple crown. No release earned a perfect score, but "Don't Call Me" by Shinee acquired the highest point total of the year on the March 4 broadcast with a score of 10,990.

## Scoring system

Songs are judged based on a combination of Digital Sales (45%; Melon, Genie, FLO), Album Sales (15%), Social Media (15%; YouTube MV views), Global Fan Vote (15%), Mnet Broadcast (10%; Mnet TV, MCD Stage, M2 Contents), Live Vote (10%; for first place nominees only).

## Chart history

Key :
| | Triple Crown |
| | Highest score of the year |
| — | No show was held |
| Episode | Date | Artist | Song | Points |
| — | January 7 | No Broadcast or Winner | No Broadcast or Winner | No Broadcast or Winner |
| 694 | January 14 | Rain & J. Y. Park | "Switch to Me" | 5,886 |
| 695 | January 21 | (G)I-dle | "Hwaa" | 9,594 |
| 696 | January 28 | (G)I-dle | "Hwaa" | 7,725 |
| 697 | February 4 | (G)I-dle | "Hwaa" | 7,173 |
| — | February 11 | No Broadcast or Winner | No Broadcast or Winner | No Broadcast or Winner |
| 698 | February 18 | Kim Woo Seok | "Sugar" | 6,747 |
| 699 | February 25 | Kang Daniel | "Paranoia" | 8,599 |
| 700 | March 4 | Shinee | "Don't Call Me" | 10,990 |
| 701 | March 11 | Shinee | "Don't Call Me" | 7,505 |
| 702 | March 18 | Brave Girls | "Rollin'" | 6,347 |
| 703 | March 25 | Rosé | "On the Ground" | — |
| 704 | April 1 | IU | "Lilac" | 7,064 |
| 705 | April 8 | Rosé | "On the Ground" | 7,483 |
| 706 | April 15 | Astro | "One" | 9,097 |
| — | April 22 | No Broadcast or Winner | No Broadcast or Winner | No Broadcast or Winner |
| 707 | April 29 | NU'EST | "Inside Out" | 7,700 |
| 708 | May 6 | Itzy | "In the Morning" | 6,120 |
| 709 | May 13 | Itzy | "In the Morning" | 8,526 |
| 710 | May 20 | NCT Dream | "Hot Sauce" | 10,800 |
| 711 | May 27 | NCT Dream | "Hot Sauce" | 8,275 |
| 712 | June 3 | NCT Dream | "Hot Sauce" | 6,723 |
| 713 | June 10 | TXT | "0X1=Lovesong (I Know I Love You)" | 6,770 |
| 714 | June 17 | Twice | "Alcohol-Free" | 10,123 |
| 715 | June 24 | Twice | "Alcohol-Free" | — |
| 716 | July 1 | Seventeen | "Ready to Love" | 7,932 |
| 717 | July 8 | NCT Dream | "Hello Future" | 7,915 |
| 718 | July 15 | NCT Dream | "Hello Future" | 7,002 |
| — | July 22 | No Broadcast or Winner | No Broadcast or Winner | No Broadcast or Winner |
| 719 | July 29 | Jeon So-yeon | "Beam Beam" | 9,322 |
| — | August 5 | No Broadcast or Winner | No Broadcast or Winner | No Broadcast or Winner |
| 720 | August 12 | Somi | "Dumb Dumb" | 7,125 |
| 721 | August 19 | The Boyz | "Thrill Ride" | — |
| 722 | August 26 | Red Velvet | "Queendom" | 9,345 |
| 723 | September 2 | Stray Kids | "Thunderous" | 7,180 |
| 724 | September 9 | Stray Kids | "Thunderous" | 9,421 |
| 725 | September 16 | STAYC | "Stereotype" | 8,146 |
| 726 | September 23 | NCT 127 | "Sticker" | — |
| 727 | September 30 | NCT 127 | "Sticker" | 8,755 |
| 728 | October 7 | NCT 127 | "Sticker" | 9,200 |
| 729 | October 14 | Itzy | "Loco" | 6,215 |
| — | October 21 | No Broadcast or Winner | No Broadcast or Winner | No Broadcast or Winner |
| 730 | October 28 | Seventeen | "Rock With You" | 6,380 |
| 731 | November 4 | NCT 127 | "Favorite (Vampire)" | 7,549 |
| 732 | November 11 | NCT 127 | "Favorite (Vampire)" | 7,690 |
| — | November 18 | No Broadcast or Winner | No Broadcast or Winner | No Broadcast or Winner |
| 733 | November 25 | MAMA Nominees Special; No Winner | MAMA Nominees Special; No Winner | MAMA Nominees Special; No Winner |
| 734 | December 2 | MAMA Nominees Special; No Winner | MAMA Nominees Special; No Winner | MAMA Nominees Special; No Winner |
| — | December 9 | No Broadcast or Winner | No Broadcast or Winner | No Broadcast or Winner |
| — | December 16 | No Broadcast or Winner | No Broadcast or Winner | No Broadcast or Winner |
| — | December 23 | No Broadcast or Winner | No Broadcast or Winner | No Broadcast or Winner |
| — | December 30 | No Broadcast or Winner | No Broadcast or Winner | No Broadcast or Winner |