1978 Dutch Open (tennis)

1978 Dutch Open
Date24–30 July
Edition21st
CategoryGrand Prix
Draw32S / 16D
Prize money$75,000
SurfaceClay / outdoor
LocationHilversum, Netherlands
Venue't Melkhuisje
Champions
Singles
Balázs Taróczy
Doubles
Tom Okker / Balázs Taróczy

The 1978 Dutch Open was a Grand Prix men's tennis tournament staged in Hilversum, Netherlands. The tournament was played on outdoor clay courts and was held from 24 July until 30 July 1978. It was the 21st edition of the tournament. Third-seeded Balázs Taróczy won the singles title, his second at the event after 1976.