These hits topped the Ultratop 50 in the Flanders region of Belgium in 1991.[1]
| Date | Artist | Title |
|---|---|---|
| January 5 | Sadeness Part I | |
| January 12 | ||
| January 19 | ||
| January 26 | Ice Ice Baby | |
| February 2 | ||
| February 9 | ||
| February 16 | ||
| February 23 | Wicked Game | |
| March 2 | ||
| March 9 | ||
| March 16 | Crazy | |
| March 23 | ||
| March 30 | ||
| April 6 | Liefde voor muziek | |
| April 13 | ||
| April 20 | Joyride | |
| April 27 | ||
| May 4 | ||
| May 11 | ||
| May 18 | ||
| May 25 | Losing My Religion | |
| June 1 | ||
| June 8 | Stef & Bob | Breek de stilte |
| June 15 | ||
| June 22 | Senza una donna | |
| June 29 | ||
| July 6 | Gypsy Woman (She's Homeless) | |
| July 13 | ||
| July 20 | ||
| July 27 | ||
| August 3 | ||
| August 10 | More Than Words | |
| August 17 | (Everything I Do) I Do It for You | |
| August 24 | ||
| August 31 | ||
| September 7 | ||
| September 14 | ||
| September 21 | ||
| September 28 | ||
| October 5 | ||
| October 12 | ||
| October 19 | James Brown Is Dead | |
| October 26 | ||
| November 2 | ||
| November 9 | Crucified | |
| November 16 | ||
| November 23 | ||
| November 30 | Let's Talk About Sex | |
| December 7 | ||
| December 14 | ||
| December 21 | Black or White | |
| December 28 |