| 1991 Donnay Indoor Championships | |
|---|---|
| Date | 11–17 February |
| Edition | 10th |
| Category | Championship Series |
| Draw | 32S / 16D |
| Prize money | $465,000 |
| Surface | Carpet / indoor |
| Location | Brussels, Belgium |
| Venue | Forest National |
| Champions | |
| Singles | |
 Guy Forget[1] | |
| Doubles | |
 Todd Woodbridge / Mark Woodforde< [2] | |
The 1991 Donnay Indoor Championships was a men's tennis tournament played on indoor carpet courts at the Forest National in Brussels, Belgium which was part of the Championship Series category of the 1990 ATP Tour. It was the 10th edition of the tournament and was held from 11 February until 17 February 1991. Fourth-seeded Guy Forget won the singles title.[3]
- ^ "1991 Brussels – Singles draw". Association of Tennis Professionals (ATP).
- ^ "1991 Brussels – Doubles draw". Association of Tennis Professionals (ATP).
- ^ John Barrett, ed. (1992). The International Tennis Federation World of Tennis 1992. London: CollinsWillow. pp. 118, 124. ISBN 9780002184304.