Pieter Jansz van Asch (1603 – 6 June 1678 (buried)) was a Dutch Golden Age painter.

He was born at Delft, the son of the portrait painter Jan van Asch and joined the Guild of St. Luke in 1623.

[1] According to Arnold Houbraken, he specialized in small landscapes, but his productivity was hampered by caring for his parents.

[3] His works are influenced by the painters Pieter de Bloot, Jan Both, Joachim Govertsz Camphuysen, Anthonie Jansz van der Croos, Jan Josefsz van Goyen, and Jan Gabrielsz Sonjé.

[1] van Asch has paintings in public collections including four in the United Kingdom.