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 . 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 fishermen, many of them Mennonites, were reportedly treated harshly in retribution for similar treatment of captured Dunkirkers (as described in 1661 by Van Meteren's ).