| Last year | No 1 hits of the year 1975 | Next year |
| US | UK | |
| 4 Jan 1975 | Lucy In The Sky With Diamonds (Elton John) |
Lonely This Christmas (Mud) |
| 11 Jan 1975 | Lucy In The Sky With Diamonds (Elton John) |
Lonely This Christmas (Mud) |
| 18 Jan 1975 | Mandy (Barry Manilow) |
Down Down (Status Quo) |
| 25 Jan 1975 | Please Mr Postman (The Carpenters) |
Ms Grace (The Tymes) |
| 01 Feb 1975 | Laughter In The Rain (Neil Sedaka) |
January (Pilot) |
| 08 Feb 1975 | Fire (Ohio Players) |
January (Pilot) |
| 15 Feb 1975 | You're No Good (Linda Ronstadt) |
January (Pilot) |
| 22 Feb 1975 | Pick Up The Pieces (Average White Band) |
Make Me Smile (Steve Harley & Cockney Rebel) |
| 01 Mar 1975 | Best Of My Love (Eagles) |
Make Me Smile (Steve Harley & Cockney Rebel) |
| 08 Mar 1975 | Have you ever been mellow? (Olivia Newton-John) |
If (Telly Savalas) |
| 15 Mar 1975 | Black water (Doobie Brothers) |
If (Telly Savalas) |
| 22 Mar 1975 | My Eyes Adored You (Frankie Valli) |
Bye Bye Baby (The Bay City Rollers) |
| 29 Mar 1975 | Lady Marmalade (Labelle) |
Bye Bye Baby (The Bay City Rollers) |
| 5 Apr 1975 | Lovin' you (Minnie Ripperton) |
Bye Bye Baby (The Bay City Rollers) |
| 12 Apr 1975 | Philadelphia Freedom (Elton John) |
Bye Bye Baby (The Bay City Rollers) |
| 19 Apr 1975 | Philadelphia Freedom (Elton John) |
Bye Bye Baby (The Bay City Rollers) |
| 26 Apr 1975 | (Hey Won't You Play) Another Somebody Done Somebody Wrong song (B.J. Thomas) |
Bye Bye Baby (The Bay City Rollers) |
| 3 May 1975 | He Don't Love You (Like I Love You) (Tony Orlando and Dawn) |
Oh Boy (Mud) |
| 10 May 1975 | He Don't Love You (Like I Love You) (Tony Orlando and Dawn) |
Oh Boy (Mud) |
| 17 May 1975 | He Don't Love You (Like I Love You) (Tony Orlando and Dawn) |
Stand By Your Man (Tammy Wynette) |
| 24 May 1975 | Shining Star (Earth, Wind & Fire) |
Stand By Your Man (Tammy Wynette) |
| 31 May 1975 | Before The Next Teardrop Falls (Freddie Fender) |
Stand By Your Man (Tammy Wynette) |
| 07 Jun 1975 | Thank God I'm A Country Boy (John Denver) |
Whispering Grass (Windsor Davies & Don Estelle) |
| 14 Jun 1975 | Sister Golden Hair (America) |
Whispering Grass (Windsor Davies & Don Estelle) |
| 21 Jun 1975 | Love Will Keep Us Together (The Captain & Tennille) |
Whispering Grass (Windsor Davies & Don Estelle) |
| 28 Jun 1975 | Love Will Keep Us Together (The Captain & Tennille) |
I'm Not In Love (10cc) |
| 5 Jul 1975 | Love Will Keep Us Together (The Captain & Tennille) |
I'm Not In Love (10cc) |
| 12 Jul 1975 | Love Will Keep Us Together (The Captain & Tennille) |
Tears On My Pillow (Johnny Nash) |
| 19 Jul 1975 | Listen To What the Man Said (Wings) |
Give A Little Love (The Bay City Rollers) |
| 26 Jul 1975 | The Hustle (Van McCoy & The Soul City Symphony) |
Give A Little Love (The Bay City Rollers) |
| 2 Aug 1975 | One Of These Nights (The Eagles) |
Give A Little Love (The Bay City Rollers) |
| 9 Aug 1975 | Jive Talkin' (The Bee Gees) |
Barbados (Typically Tropical) |
| 16 Aug 1975 | Jive Talkin' (The Bee Gees) |
Can't Give You Anything (But My Love) (The Stylistics) |
| 23 Aug 1975 | Fallin' In Love (Hamilton, Joe Frank & Reynolds) |
Can't Give You Anything (But My Love) (The Stylistics) |
| 30 Aug 1975 | Get down tonight (KC & The Sunshine Band) |
Can't Give You Anything (But My Love) (The Stylistics) |
| 6 Sep 1975 | Rhinestone Cowboy (Glen Campbell) |
Sailing (Rod Stewart) |
| 13 Sep 1975 | Rhinestone Cowboy (Glen Campbell) |
Sailing (Rod Stewart) |
| 20 Sep 1975 | Fame (David Bowie) |
Sailing (Rod Stewart) |
| 27 Sep 1975 | I'm sorry (John Denver) |
Sailing (Rod Stewart) |
| 4 Oct 1975 | Fame (David Bowie) |
Hold Me Close (David Essex) |
| 11 Oct 1975 | Bad Blood (Neil Sedaka) |
Hold Me Close (David Essex) |
| 18 Oct 1975 | Bad Blood (Neil Sedaka) |
Hold Me Close (David Essex) |
| 25 Oct 1975 | Blad Blood (Neil Sedaka) |
I Only Have Eyes For You (Art Garfunkel) |
| 01 Nov 1975 | Island Girl (Elton John) |
I Only Have Eyes For You (Art Garfunkel) |
| 8 Nov 1975 | Island Girl (Elton John) |
Space Oddity (David Bowie) |
| 15 Nov 1975 | Island girl (Elton John) |
Space Oddity (David Bowie) |
| 22 Nov 1975 | That's The Way I Like It (KC & The Sunshine Band) |
D.I.V.O.R.C.E. (Billy Conolly) |
| 29 Nov 1975 | Fly, Robin, Fly (Silver convention) |
Bohemian Rhapsody (Queen) |
| 6 Dez 1975 | Fly, Robin, Fly (Silver convention) |
Bohemian Rhapsody (Queen) |
| 13 Dez 1975 | Fly, Robin, Fly (Silver convention) |
Bohemian Rhapsody (Queen) |
| 20 Dez 1975 | That's The Way I Like It (KC & The Sunshine Band) |
Bohemian Rhapsody (Queen) |
| 27 Dez 1975 | Let's Do It Again (The Staple Singers) |
Bohemian Rhapsody (Queen) |