15 February 1622, Schiedam - buried 28 March 1673, Amsterdam ) was a Dutch Golden Age painter, mostly of landscapes.
Pynacker was the son of a wine merchant, who was a member of the vroedschap, or city regency. He travelled to Italy and was gone for three years. In 1658 he converted to Catholicism in order to marry Eva Maria de Geest, Wybrand de Geest's daughter. In that year his portrait was painted by his father-in-law. In Schiedam he baptized two children, but from 1661 until he died, he lived on the Rozengracht in Amsterdam.