Leo Donald Koopmans (born November 28, 1953) is a former Dutch international ice hockey forward.

[1] A 196 cm, 97 kg forward, Koopmans first played in the Dutch top division with HYS Veronica 538 in 1972.

Koopmans rejoined Heerenveen for 1977-8 and won the league's scoring title with 39 goals and 40 assists in 30 games.

He played 20 times for the Netherlands at an international level, including at the 1980 Winter Olympics.

In 1981, the only time the country has competed in the contest's top tier, Koopmans scored 4 goals and an assist in 8 games.