This lists songs that hit number one on the charts in the US during 1970. If a song spent nonconsecutive weeks at number one, the number of weeks for each occurrence at the top is shown in parenthesis.
| Date | Artist - Title | Weeks at #1 |
| December 28 1969 – January 24 1970 | B.J. Thomas - Raindrops Keep Falling On My Head | 4 |
| January 25 – 31 1970 | Jackson Five - I Want You Back | 1 |
| February 1 – 7 1970 | Shocking Blue - Venus | 1 |
| February 8 – 21 1970 | Sly and The Family Stone - Thank You (Fallettin Me Be Mice Elf Agin) | 2 |
| February 22 – April 4 1970 | Simon and Garfunkel - Bridge Over Troubled Water | 6 |
| April 5 – 18 1970 | Beatles - Let It Be | 2 |
| April 19 – May 2 1970 | Jackson Five - ABC | 2 |
| May 3 – 23 1970 | Guess Who - American Woman | 3 |
| May 24 – June 6 1970 | Ray Stevens - Everything Is Beautiful | 2 |
| June 7 – 20 1970 | Beatles - The Long and Winding Road | 2 |
| June 21 – July 4 1970 | Jackson Five - The Love You Save | 2 |
| July 5 – 18 1970 | Three Dog Night - Mama Told Me (Not To Come) | 2 |
| July 19 – August 15 1970 | Carpenters - (They Long To Be) Close To You | 4 |
| August 16 – 22 1970 | Bread - Make It With You | 1 |
| August 23 – September 12 1970 | Edwin Starr - War | 3 |
| September 13 – October 3 1970 | Diana Ross - Ain't No Mountain High Enough | 3 |
| October 4 – 10 1970 | Neil Diamond - Cracklin' Rosie | 1 |
| October 11 – November 14 1970 | Jackson Five - I'll Be There | 5 |
| November 15 – December 5 1970 | Partridge Family - I Think I Love You | 3 |
| December 6 – 19 1970 | Miracles - The Tears Of A Clown | 2 |
| December 20 1970 – January 16 1971 | George Harrison - My Sweet Lord | 4 |
21 different songs hit number one in the US during 1970.
Top 5 Songs of 1970

1: Simon and Garfunkel - Bridge Over Troubled Water
2: Carpenters - (They Long To Be) Close To You
3: Guess Who - American Woman
4: B.J. Thomas - Raindrops Keep Fallin' On My Head
5: Edwin Starr - War
2: Carpenters - (They Long To Be) Close To You
3: Guess Who - American Woman
4: B.J. Thomas - Raindrops Keep Fallin' On My Head
5: Edwin Starr - War