Jacques Keyser (12 October 1885 – 21 March 1954) was a middle-distance runner.

Born in Paris, he was the son of a Dutch father and Belgian mother, and could compete for both France and the Netherlands.

[3] Keyser took part in the International Cross Country Championships in 1907 and 1911–1913 and won individual and team medals in 1913; his teams placed fourth in other three championships.

He competed for the Netherlands at the 1908 Summer Olympics, but failed to reach the finals of the 1500 m and 5 mile races.

This biographical article relating to Dutch athletics is a stub.