These are the Billboard Hot 100 number-one singles of 1970.
| Issue Date | Song | Artist(s) | Reference |
|---|---|---|---|
| January 3 | "Raindrops Keep Fallin' on My Head" | B.J. Thomas | |
| January 10 | |||
| January 17 | |||
| January 24 | |||
| January 31 | "I Want You Back" | The Jackson 5 | |
| February 7 | "Venus" | Shocking Blue | |
| February 14 | "Thank You (Falettinme Be Mice Elf Agin)" / "Everybody Is a Star" | Sly & the Family Stone | |
| February 21 | |||
| February 28 | "Bridge over Troubled Water" | Simon & Garfunkel | |
| March 7 | |||
| March 14 | |||
| March 21 | |||
| March 28 | |||
| April 4 | |||
| April 11 | "Let It Be" | The Beatles | |
| April 18 | |||
| April 25 | "ABC" | The Jackson 5 | |
| May 2 | |||
| May 9 | "American Woman" / "No Sugar Tonight" | The Guess Who | |
| May 16 | |||
| May 23 | |||
| May 30 | "Everything Is Beautiful" | Ray Stevens | |
| June 6 | |||
| June 13 | "The Long and Winding Road" / "For You Blue" | The Beatles | |
| June 20 | |||
| June 27 | "The Love You Save" | The Jackson 5 | |
| July 4 | |||
| July 11 | "Mama Told Me (Not to Come)" | Three Dog Night | |
| July 18 | |||
| July 25 | "(They Long to Be) Close to You" | Carpenters | |
| August 1 | |||
| August 8 | |||
| August 15 | |||
| August 22 | "Make It with You" | Bread | |
| August 29 | "War" | Edwin Starr | |
| September 5 | |||
| September 12 | |||
| September 19 | "Ain't No Mountain High Enough" | Diana Ross | |
| September 26 | |||
| October 3 | |||
| October 10 | "Cracklin' Rosie" | Neil Diamond | |
| October 17 | "I'll Be There" | The Jackson 5 | |
| October 24 | |||
| October 31 | |||
| November 7 | |||
| November 14 | |||
| November 21 | "I Think I Love You" | The Partridge Family | |
| November 28 | |||
| December 5 | |||
| December 12 | "The Tears of a Clown" | Smokey Robinson & the Miracles | |
| December 19 | |||
| December 26 | "My Sweet Lord" / "Isn't It a Pity" | George Harrison |
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