Jacques Colaert or Jacob Collaart (died September 1600) was a Flemish privateer who during the Dutch Revolt sailed in royal service as one of the Dunkirkers.
A privateer based in Dunkirk, Colaert in August 1600 sailed with a fleet under command of Vice Admiral Anton of Burgundy, Lord of Wacken.
The fleet consisted of six Spanish royal ships and six independent privateers; Colaert commanded the six-gun vessel Crabbelcat with a crew of 43 sailors.
The seven remaining privateers eventually encountered one of these Dutch fleets sent out against them, near the island of Vlieland, commanded by Captain Arie Corneliszoon Cruyck.
The privateers fled from Cruyck's force reportedly dumping as much cargo overboard as possible in an attempt to outrun the Dutch naval fleet.