1981 Donnay Indoor Championships

The 1981 Donnay Indoor Championships was a men's tennis tournament played on indoor carpet courts in Brussels, Belgium. It was a WCT tournament that was part of the 1981 Volvo Grand Prix circuit. It was the inaugural edition of the tournament and was held from 9 March until 15 March 1981. Second-seeded Jimmy Connors won the singles title.

Singles
🇺🇸 Jimmy Connors defeated 🇺🇸 Brian Gottfried, 6–2, 6–4, 6–3
 * It was Connors' 2nd singles title of the year and the 87th of his career.

Doubles
🇺🇸 Sandy Mayer / Frew McMillan defeated  Kevin Curren / 🇺🇸 Steve Denton, 4–6, 6–3, 6–3