The 1974 Dutch Open was a men's tennis tournament staged at 't Melkhuisje in Hilversum, Netherlands that was part of the Group C tier of the 1974 Commercial Union Assurance Grand Prix circuit.

The tournament was played on outdoor clay courts and was held from 21 July until 28 July 1974.

First-seeded Guillermo Vilas won the singles title and earned $5,000 first-prize money.

For the first time no women's events were held.

[3] Guillermo Vilas defeated Barry Phillips-Moore 6–4, 6–2, 1–6, 6–3 Tito Vázquez / Guillermo Vilas defeated Lito Álvarez / Julián Ganzábal 6–2, 3–6, 6–1, 6–2