These are the Canadian number-one albums of 1990.[1] The chart was compiled and published by RPM every Saturday.
| Issue date | Album | Artist |
|---|---|---|
| January 13 | ...But Seriously | Phil Collins |
| January 20 | ||
| January 27 | ||
| February 3 | ||
| February 10 | ||
| February 17 | ||
| February 24 | Girl You Know It's True | Milli Vanilli |
| March 3 | ...But Seriously | Phil Collins |
| March 10 | ||
| March 17 | ||
| March 24 | ||
| March 31 | Forever Your Girl | Paula Abdul |
| April 7 | Alannah Myles | Alannah Myles |
| April 14 | ||
| April 21 | I Do Not Want What I Haven't Got | Sinéad O'Connor |
| April 28 | ||
| May 5 | ||
| May 12 | ||
| May 19 | ||
| May 26 | ||
| June 2 | ||
| June 9 | ||
| June 16 | ||
| June 23 | ||
| June 30 | ||
| July 7 | ||
| July 14 | ||
| July 21 | ||
| July 28 | ||
| August 4 | Step by Step | New Kids on the Block |
| August 11 | ||
| August 18 | Please Hammer, Don't Hurt 'Em | MC Hammer |
| August 25 | ||
| September 1 | ||
| September 8 | Wilson Phillips | Wilson Phillips |
| September 15 | ||
| September 22 | ||
| September 29 | ||
| October 6 | Please Hammer Don't Hurt 'Em | MC Hammer |
| October 13 | Wilson Phillips | Wilson Phillips |
| October 20 | Please Hammer Don't Hurt 'Em | MC Hammer |
| October 27 | The Razors Edge | AC/DC |
| November 3 | ||
| November 10 | ||
| November 17 | ||
| November 24 | ||
| December 1 | ||
| December 8 | ||
| December 15 | The Rhythm of the Saints | Paul Simon |
| December 22 |