The best selling album in 2021 in United States was DANGEROUS: THE DOUBLE ALBUM by MORGAN WALLEN which sold 3,226,000 copies.
| Rank | Artist | Album | Sales | Released |
| 1 | MORGAN WALLEN | DANGEROUS: THE DOUBLE ALBUM | 3,226,000 | 2021 |
| 2 | OLIVIA RODRIGO | SOUR | 2,856,000 | 2021 |
| 3 | DRAKE | CERTIFIED LOVER BOY | 1,970,000 | 2021 |
| 4 | ADELE | 30 | 1,936,000 | 2021 |
| 5 | POP SMOKE | SHOOT FOR THE STARS, AIM FOR THE MOON | 1,533,000 | 2020 |
| 6 | DOJA CAT | PLANET HER | 1,510,000 | 2021 |
| 7 | THE KID LAROI | F*CK LOVE | 1,505,000 | 2020 |
| 8 | JUSTIN BIEBER | JUSTICE | 1,473,000 | 2021 |
| 9 | DUA LIPA | FUTURE NOSTALGIA | 1,403,000 | 2020 |
| 10 | THE WEEKND | AFTER HOURS | 1,342,000 | 2020 |
Source: Nielsen SoundScan