The Brussels Indoor (also known as the Donnay Indoor Championships) is a defunct professional tennis tournament played on indoor carpet courts at Forest National in Brussels. It was part of the Grand Prix tennis circuit initially and later, for three years, the ATP Championship Series of the ATP Tour. The tournament was established in 1980, becoming the second tournament to be played in Brussels, along with the ATP Brussels Outdoor. The following year the outdoor tournament was played for the last time, leaving the Donnay Indoor Championships as the sole professional tournament in the region.

It was held between 1981 and 1988^[1] and then again from 1990 until 1992.

Past finals

Singles

Year	Champions	Runners-up	Score
1981[2]	Jimmy Connors	Brian Gottfried	6–2, 6–4, 6–3
1982	Vitas Gerulaitis	Mats Wilander	4–6, 7–6, 6–2
1983	Peter McNamara	Ivan Lendl	6–4, 4–6, 7–6
1984	John McEnroe	Ivan Lendl	6–1, 6–3
1985	Anders Järryd	Mats Wilander	6–4, 3–6, 7–5
1986	Mats Wilander	Broderick Dyke	6–2, 6–3
1987	Mats Wilander	John McEnroe	6–3, 6–4
1988	Henri Leconte	Jakob Hlasek	7–6, 7–6, 6–4
1989	Not held
1990	Boris Becker	Carl-Uwe Steeb	7–5, 6–2, 6–2
1991	Guy Forget	Andrei Cherkasov	6–3, 7–5, 3–6, 7–6
1992	Boris Becker	Jim Courier	6–7(5–7), 2–6, 7–6(12–10), 7–6(7–5), 7–5

Doubles

Year	Champions	Runners-up	Score
1981[3]	Sandy Mayer Frew McMillan	Kevin Curren Steve Denton	4–6, 6–3, 6–3
1982	Pavel Složil Sherwood Stewart	Tracy Delatte Chris Dunk	6–4, 6–7, 7–5
1983	Heinz Günthardt Balázs Taróczy	Hans Simonsson Mats Wilander	6–2, 6–4
1984	Tim Gullikson Tom Gullikson	Kevin Curren Steve Denton	6–4, 6–7, 7–6
1985	Stefan Edberg Anders Järryd	Kevin Curren Wojciech Fibak	6–3, 7–6
1986	Boris Becker Slobodan Živojinović	John Fitzgerald Tomáš Šmíd	7–6, 7–5
1987	Boris Becker Slobodan Živojinović	Chip Hooper Mike Leach	7–6, 7–6
1988	Wally Masur Tom Nijssen	John Fitzgerald Tomáš Šmíd	W/O
1989	Not held
1990	Emilio Sánchez Slobodan Živojinović	Goran Ivanišević Balázs Taróczy	7–5, 6–3
1991	Todd Woodbridge Mark Woodforde	Libor Pimek Michiel Schapers	6–3, 6–0
1992	Boris Becker John McEnroe	Guy Forget Jakob Hlasek	6–3, 6–2