List of Billboard number-one country albums of 1990
These are the U.S. number-one country albums of 1990, per the Billboard Top Country Albums chart.
Note that Billboard publishes charts with an issue date approximately 7–10 days in advance.
| Issue Date | Album | Artist |
| January 6 | No Holdin' Back | Randy Travis |
| January 13 | No Holdin' Back | Randy Travis |
| January 20 | No Holdin' Back | Randy Travis |
| January 27 | Killin' Time | Clint Black |
| February 3 | Killin' Time | Clint Black |
| February 10 | Killin' Time | Clint Black |
| February 17 | Killin' Time | Clint Black |
| February 24 | Killin' Time | Clint Black |
| March 3 | RVS III | Ricky Van Shelton |
| March 10 | RVS III | Ricky Van Shelton |
| March 17 | RVS III | Ricky Van Shelton |
| March 24 | RVS III | Ricky Van Shelton |
| March 31 | RVS III | Ricky Van Shelton |
| April 7 | RVS III | Ricky Van Shelton |
| April 14 | RVS III | Ricky Van Shelton |
| April 21 | RVS III | Ricky Van Shelton |
| April 28 | RVS III | Ricky Van Shelton |
| May 5 | Killin' Time | Clint Black |
| May 12 | Killin' Time | Clint Black |
| May 19 | Killin' Time | Clint Black |
| May 26 | Killin' Time | Clint Black |
| June 2 | Killin' Time | Clint Black |
| June 9 | Killin' Time | Clint Black |
| June 16 | Killin' Time | Clint Black |
| June 23 | Killin' Time | Clint Black |
| June 30 | Killin' Time | Clint Black |
| July 7 | Killin' Time | Clint Black |
| July 14 | Livin' It Up | George Strait |
| July 21 | Livin' It Up | George Strait |
| July 28 | Livin' It Up | George Strait |
| August 4 | Killin' Time | Clint Black |
| August 11 | Killin' Time | Clint Black |
| August 18 | Killin' Time | Clint Black |
| August 25 | Killin' Time | Clint Black |
| September 1 | Killin' Time | Clint Black |
| September 8 | Killin' Time | Clint Black |
| September 15 | Killin' Time | Clint Black |
| September 22 | Killin' Time | Clint Black |
| September 29 | Killin' Time | Clint Black |
| October 6 | Killin' Time | Clint Black |
| October 13 | No Fences | Garth Brooks |
| October 20 | No Fences | Garth Brooks |
| October 27 | No Fences | Garth Brooks |
| November 3 | No Fences | Garth Brooks |
| November 10 | No Fences | Garth Brooks |
| November 17 | No Fences | Garth Brooks |
| November 24 | Heroes & Friends | Randy Travis |
| December 1 | No Fences | Garth Brooks |
| December 8 | No Fences | Garth Brooks |
| December 15 | No Fences | Garth Brooks |
| December 22 | Put Yourself in My Shoes | Clint Black |
| December 29 | Put Yourself in My Shoes | Clint Black |
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| | 1964–1979 | |
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| | 1980–1999 | |
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| | 2000–present | |
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