| 1978 Dutch Open | |
|---|---|
| Date | July 24 – July 30 |
| Edition | 22nd |
| Category | Grand Prix |
| Draw | 32S / 16D |
| Prize money | $75,000 |
| Surface | Clay / Outdoor |
| Location | Hilversum, Netherlands |
| Venue | 't Melkhuisje |
| Champions | |
| Singles | |
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| Doubles | |
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The 1978 Dutch Open was a Grand Prix tennis tournament staged in Hilversum, Netherlands. The tournament was played on outdoor clay courts and was held from July 24 to July 30, 1978. It was the 22nd edition of the tournament.
Balázs Taróczy defeated
Tom Okker 2–6, 6–1, 6–2, 6–4
Tom Okker /
Balázs Taróczy defeated
Bob Carmichael /
Mark Edmondson 7–6, 4–6, 7–5