1981 Belgian International Championships
The 1981 Belgian International Championships was a men's tennis tournament staged at the Leopold Club in Brussels, Belgium that was part of the Grand Prix circuit. The tournament was played on outdoor clay courts and was held from 8 June until 14 June 1981. It was the tenth and last edition of the tournament and third-seeded Marko Ostoja won the singles title.
Finals
Singles
Marko Ostoja defeated Ricardo Ycaza 4–6, 6–4, 7–5- It was Ostoja's only singles title of his career.