These are the Billboard magazine number one albums of 1970, per the Billboard 200.
| Issue Date | Album | Artist(s) |
|---|---|---|
| January 3 | Abbey Road | The Beatles |
| January 10 | ||
| January 17 | Led Zeppelin II | Led Zeppelin |
| January 24 | Abbey Road | The Beatles |
| January 31 | Led Zeppelin II | Led Zeppelin |
| February 7 | ||
| February 14 | ||
| February 21 | ||
| February 28 | ||
| March 7 | Bridge over Troubled Water | Simon & Garfunkel |
| March 14 | ||
| March 21 | ||
| March 28 | ||
| April 4 | ||
| April 11 | ||
| April 18 | ||
| April 25 | ||
| May 2 | ||
| May 9 | ||
| May 16 | Déjà Vu | Crosby, Stills, Nash & Young |
| May 23 | McCartney | Paul McCartney |
| May 30 | ||
| June 6 | ||
| June 13 | Let It Be | The Beatles |
| June 20 | ||
| June 27 | ||
| July 4 | ||
| July 11 | Woodstock: Music from the Original Soundtrack and More | Soundtrack |
| July 18 | ||
| July 25 | ||
| August 1 | ||
| August 8 | Blood, Sweat & Tears 3 | Blood, Sweat & Tears |
| August 15 | ||
| August 22 | Cosmo's Factory | Creedence Clearwater Revival |
| August 29 | ||
| September 5 | ||
| September 12 | ||
| September 19 | ||
| September 26 | ||
| October 3 | ||
| October 10 | ||
| October 17 | ||
| October 24 | Abraxas | Santana |
| October 31 | Led Zeppelin III | Led Zeppelin |
| November 7 | ||
| November 14 | ||
| November 21 | ||
| November 28 | Abraxas | Santana |
| December 5 | ||
| December 12 | ||
| December 19 | ||
| December 26 |
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