Jongert is a shipyard specialized in the building of sailing yachts, located in Wieringerwerf, Netherlands.

Between 1970 and 1994 the yard exported cumulatively in excess of half a billion guilders worth of yachts.

[1] Most of the later vessels were designed by Tony Castro and built from steel or aluminium.

[4][5] On January 19, 2017, they announced they found a new investor, following the failed takeover of the yard by Acico.

Together with the Vripack design studio they are working on a 47 m (154 ft) motor yacht project.