These are the Billboard magazine number-one albums of 1955, per the Billboard albums chart. [1]
| Issue date | Album | Artist(s) | Label | Ref. |
|---|---|---|---|---|
| January 1 | The Student Prince | Mario Lanza | RCA Victor | [2] [3] |
| January 8 | [4] | |||
| January 15 | ||||
| January 22 | [5] | |||
| January 29 | ||||
| February 5 | [6] | |||
| February 12 | ||||
| February 19 | [7] | |||
| February 26 | ||||
| March 5 | Music, Martinis and Memories | Jackie Gleason | Capitol | [8] |
| March 12 | ||||
| March 19 | The Student Prince | Mario Lanza | RCA Victor | [9] |
| March 26 | ||||
| April 2 | [10] | |||
| April 9 | ||||
| April 16 | [11] | |||
| April 23 | ||||
| April 30 | [12] | |||
| May 7 | ||||
| May 14 | [13] | |||
| May 21 | ||||
| May 28 | Crazy Otto | Crazy Otto | Decca | [14] |
| June 4 | ||||
| June 11 | Starring Sammy Davis Jr. | Sammy Davis Jr. | Decca | [15] |
| June 18 | ||||
| June 25 | [16] | |||
| July 2 | ||||
| July 9 | [17] | |||
| July 16 | ||||
| July 23 | Lonesome Echo | Jackie Gleason | Capitol | [18] |
| July 30 | ||||
| August 6 | Love Me or Leave Me | Doris Day / Soundtrack | Columbia | [19] |
| August 13 | No album chart | |||
| August 20 | ||||
| August 27 | ||||
| September 3 | Love Me or Leave Me | Doris Day / Soundtrack | Columbia | [20] |
| September 10 | ||||
| September 17 | [21] | |||
| September 24 | ||||
| October 1 | [22] | |||
| October 8 | ||||
| October 15 | [23] | |||
| October 22 | ||||
| October 29 | [24] | |||
| November 5 | ||||
| November 12 | [25] | |||
| November 19 | ||||
| November 26 | [26] | |||
| December 3 | [27] | |||
| December 10 | No album chart | |||
| December 17 | ||||
| December 24 | ||||
| December 31 | ||||