The 1972 Belgian Open Championships was a men's tennis tournament staged at the Leopold Club in Brussels, Belgium that was part of the Grand Prix circuit and categorized as a Group C event.

The tournament was played on outdoor clay courts and was held from 8 May until 4 May 1972.

It was the sixth edition of the tournament and Manuel Orantes won the singles title.

[3] Manuel Orantes defeated Andrés Gimeno 6–4, 6–1, 2–6, 7–5 Manuel Orantes / Juan Gisbert Sr. and Patricio Cornejo / Jaime Fillol 9–7, 6–3