1975 Billboard Number One Hits:

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

(Data is compiled from various charts including Billboard’s “Pop,” “Adult Contemporary,” “Airplay,” “R&B” and “Singles” Charts. “Hot 100” is the primary chart used starting October, 1958)