| | December 28, 1974 - January 3, 1975: Angie Baby - Helen Reddy |
| | January 4 - January 17: Lucy in the Sky with Diamonds - Elton John |
| | January 18 - January 24: Mandy - Barry Manilow |
| | January 25 - January 31: Please Mr. Postman - The Carpenters |
| | February 1 - February 7: Laughter In The Rain - Neil Sedaka |
| | February 8 - February 14: Fire - Ohio Players |
| | February 15 - February 21: You're No Good - Linda Ronstadt |
| | February 22 - February 28: Pick Up The Pieces - AWB |
| | March 1 - March 7: Best Of My Love - The Eagles |
| | March 8 - March 14: Have You Never Been Mellow - Olivia Newton-John |
| | March 15 - March 21: Black Water - The Doobie Brothers |
| | March 22 - March 28: My Eyes Adored You - Frankie Valli |
| | March 29 April 4: Lady Marmalade - LaBelle |
| | April 5 - April 11: Lovin' You - Minnie Riperton |
| | April 12 - April 25: Philadelphia Freedom - The Elton John Band |
| | April 26 - May 2: (Hey Won't You Play) Another Somebody Done Somebody Wrong Song - B. J. Thomas |
| | May 3 - May 23: He Don't Love You (Like I Love You) - Tony Orlando and Dawn |
| | May 24 - May 30: Shining Star - Earth, Wind & Fire |
| | May 31 - June 6: Before The Next Teardrop Falls - Freddy Fender |
| | June 7 - June 13: Thank God I'm A Country Boy - John Denver |
| | June 14 - June 20: Sister Golden Hair - America |
| | June 21 - July 18: Love Will Keep Us Together - The Captain & Tennille |
| | July 19 - July 25: Listen To What The Man Said - Paul McCartney & Wings |
| | July 26 - August 1: The Hustle - Van McCoy/The Soul City Symphony |
| | August 2 - August 8: One Of These Nights - The Eagles |
| | August 9 - August 22: Jive Talkin' - Bee Gees |
| | August 23 - August 29: Fallin' In Love - Hamilton, Joe Frank & Reynolds |
| | August 30 - September 5: Get Down Tonight - KC and the Sunshine Band |
| | September 6 - September 19: Rhinestone Cowboy - Glen Campbell |
| | September 20 - September 26: Fame - David Bowie |
| | September 27 - October 10: I'm Sorry - John Denver |
| | October 11 - October 31: Bad Blood - Neil Sedaka |
| | November 1 - November 21: Island Girl - Elton John |
| | November 22 - November 28: That's The Way (I Like It) - KC and the Sunshine Band |
| | November 29 - December 26: Fly, Robin, Fly - Silver Convention |
| | December 27, 1975 - January 2, 1976: Let's Do It Again - The Staple Singers |