- Source: List of Oricon number-one albums of 2021
- BTS
- Dua Lipa (album)
- Girls' Generation
- Jay Chou
- Diskografi album BTS
- Diskografi 2PM
- Super Junior
- Diskografi Blackpink
- Diskografi Pentagon
- Diskografi (G)I-dle
- List of Oricon number-one albums of 2021
- List of Oricon number-one albums
- List of Oricon number-one singles of 2021
- List of Oricon number-one singles
- List of fastest-selling albums
- List of Oricon number-one albums of 2022
- List of Oricon number-one albums of 1994
- BTS albums discography
- Oricon Albums Chart
- List of best-selling albums
The following is a list of Oricon number-one albums of 2021, which uses data from combined (physical, digital, and streaming) and physical sales.
Chart history
= Combined sales
== Physical sales
=See also
List of Oricon number-one singles of 2021