This lists songs that hit number one on the charts in the US during 1977. 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 |
| November 7 1976 – January 1 1977 | Rod Stewart - Tonight's The Night (Gonna Be Alright) | 8 |
| January 2 – 8 1977 | Marilyn McCoo and Billy Davis Jr. - You Don't Have to be a Star | 1 |
| January 9 – 15 1977 | Leo Sayer - You Make Me Feel Like Dancing | 1 |
| January 16 – 22 1977 | Stevie Wonder - I Wish | 1 |
| January 23 – 29 1977 | Rose Royce - Car Wash | 1 |
| January 30 – February 12 1977 | Mary MacGregor - Torn Between Two Lovers | 2 |
| February 13 – 19 1977 | Manfred Mann's Earth Band - Blinded By The Light | 1 |
| February 20 – 26 1977 | Eagles - New Kid In Town | 1 |
| February 27 – March 19 1977 | Barbra Streisand - Love Theme From 'A Star Is Born' (Evergreen) | 3 |
| March 20 – April 2 1977 | Hall and Oates - Rich Girl | 2 |
| April 3 – 9 1977 | ABBA - Dancing Queen | 1 |
| April 10 – 16 1977 | David Soul - Don't Give Up On Us | 1 |
| April 17 – 23 1977 | Thelma Houston - Don't Leave Me This Way | 1 |
| April 24 – 30 1977 | Glen Campbell - Southern Nights | 1 |
| May 1 – 7 1977 | Eagles - Hotel California | 1 |
| May 8 – 14 1977 | Leo Sayer - When I Need You | 1 |
| May 15 – June 4 1977 | Stevie Wonder - Sir Duke | 3 |
| June 5 – 11 1977 | KC and The Sunshine Band - I'm Your Boogie Man | 1 |
| June 12 – 18 1977 | Fleetwood Mac - Dreams | 1 |
| June 19 – 25 1977 | Marvin Gaye - Got To Give It Up Part 1 | 1 |
| June 26 – July 2 1977 | Bill Conti - Gonna Fly Now (Theme from Rocky) | 1 |
| July 3 – 9 1977 | Alan O'Day - Undercover Angel | 1 |
| July 10 – 16 1977 | Shaun Cassidy - Da Doo Ron Ron | 1 |
| July 17 – 23 1977 | Barry Manilow - Looks Like We Made It | 1 |
| July 24 – August 13 1977 | Andy Gibb - I Just Want to Be Your Everything | 4 (3) |
| August 14 – September 10 1977 | Emotions - Best Of My Love | 5 (4) |
| September 11 – 17 1977 | Andy Gibb - I Just Want to Be Your Everything | 4 (1) |
| September 18 – 24 1977 | Emotions - Best Of My Love | 5 (1) |
| September 25 – October 8 1977 | Meco - Star Wars Theme | 2 |
| October 9 – December 17 1977 | Debby Boone - You Light Up My Life | 10 |
| December 18 1977 – January 7 1978 | Bee Gees - How Deep Is Your Love | 3 |
29 different songs hit number one in the US during 1977.
Top 5 Songs of 1977
1: Rod Stewart - Tonight's The Night (Gonna Be Alright)
2: Andy Gibb - I Just Want To Be Your Everything
3: Emotions - Best Of My Love
4: Barbra Streisand - Love Theme From A Star Is Born
5: Hot - Angel In Your Arms
2: Andy Gibb - I Just Want To Be Your Everything
3: Emotions - Best Of My Love
4: Barbra Streisand - Love Theme From A Star Is Born
5: Hot - Angel In Your Arms