Jan Willemsz Lapp (1585 - 1663), was a Dutch Golden Age landscape painter.
He was born in The Hague and travelled to Rome in 1605.[1] On his return he became a member of the Guild of St. Luke in The Hague in 1625. He was last registered in Leiden in 1662 and in Amsterdam in 1663.[1] It is unknown where he died.