Hot 100 number-one hits of 1977 (USA)
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These are the Billboard magazine Hot 100 number one hits of 1977.
| Issue Date | Song | Artist |
| January 1 | Tonight's the Night (Gonna Be Alright) | Rod Stewart |
| January 8 | You Don't Have to Be a Star (to Be in My Show) | Marilyn McCoo and Billy Davis, Jr. |
| January 15 | You Make Me Feel Like Dancing | Leo Sayer |
| January 22 | I Wish | Stevie Wonder |
| January 29 | Car Wash | Rose Royce |
| February 5 | Torn Between Two Lovers | Mary MacGregor |
| February 12 | Torn Between Two Lovers | Mary MacGregor |
| February 19 | Blinded by the Light | Manfred Mann's Earth Band |
| February 26 | New Kid in Town | Eagles |
| March 5 | Love Theme From "A Star is Born" (Evergreen) | Barbra Streisand |
| March 12 | Love Theme From "A Star is Born" (Evergreen) | Barbra Streisand |
| March 19 | Love Theme From "A Star is Born" (Evergreen) | Barbra Streisand |
| March 26 | Rich Girl | Daryl Hall and John Oates |
| April 2 | Rich Girl | Daryl Hall and John Oates |
| April 9 | Dancing Queen | ABBA |
| April 16 | Don't Give Up On Us | David Soul |
| April 23 | Don't Leave Me This Way | Thelma Houston |
| April 30 | Southern Nights | Glen Campbell |
| May 7 | Hotel California | Eagles |
| May 14 | When I Need You | Leo Sayer |
| May 21 | Sir Duke | Stevie Wonder |
| May 28 | Sir Duke | Stevie Wonder |
| June 4 | Sir Duke | Stevie Wonder |
| June 11 | I'm Your Boogie Man | KC and the Sunshine Band |
| June 18 | Dreams | Fleetwood Mac |
| June 25 | Got to Give It Up (Part 1) | Marvin Gaye |
| July 2 | Gonna Fly Now (Theme From "Rocky") | Bill Conti |
| July 9 | Undercover Angel | Alan O'Day |
| July 16 | Da Doo Ron Ron | Shaun Cassidy |
| July 23 | Looks Like We Made It | Barry Manilow |
| July 30 | I Just Want to Be Your Everything | Andy Gibb |
| August 7 | I Just Want to Be Your Everything | Andy Gibb |
| August 13 | I Just Want to Be Your Everything | Andy Gibb |
| August 20 | Best of My Love | The Emotions |
| August 27 | Best of My Love | The Emotions |
| September 3 | Best of My Love | The Emotions |
| September 10 | Best of My Love | The Emotions |
| September 17 | I Just Want to Be Your Everything | Andy Gibb |
| September 24 | Best of My Love | The Emotions |
| October 1 | Star Wars Title Theme / Cantina Band | Meco |
| October 8 | Star Wars Title Theme / Cantina Band | Meco |
| October 15 | You Light Up My Life | Debby Boone |
| October 22 | You Light Up My Life | Debby Boone |
| October 29 | You Light Up My Life | Debby Boone |
| November 5 | You Light Up My Life | Debby Boone |
| November 12 | You Light Up My Life | Debby Boone |
| November 19 | You Light Up My Life | Debby Boone |
| November 26 | You Light Up My Life | Debby Boone |
| December 3 | You Light Up My Life | Debby Boone |
| December 10 | You Light Up My Life | Debby Boone |
| December 17 | You Light Up My Life | Debby Boone |
| December 24 | How Deep Is Your Love | Bee Gees |
| December 31 | How Deep Is Your Love | Bee Gees |
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1940 | 1941 | 1942 | 1943 | 1944 | 1945 | 1946 | 1947 | 1948 | 1949 |
