1989 Dutch Open
Date	24–30 July
Edition	32nd
Category	Grand Prix
Draw	32S
Prize money	$150,000
Surface	Clay
Location	Hilversum, The Netherlands
Venue	't Melkhuisje
Champions
Singles
Karel Nováček[1]
Doubles
Final cancelled due to rain [2]
← 1988 · Dutch Open · 1990 →

The 1989 Dutch Open was a men's Grand Prix tennis tournament staged at 't Melkhuisje in Hilversum, Netherlands and played on outdoor clay courts. It was the 32nd edition of the tournament was held from 24 July to 30 July 1989. Eighth-seeded Karel Nováček won the singles title.

Karel Nováček defeated Emilio Sánchez 6–2, 6–4

• It was Nováček's 1st singles title of the year and the 2nd of his career.

Tomás Carbonell / Diego Pérez vs. Paul Haarhuis / Mark Koevermans, final cancelled due to rain

• ITF tournament edition details