Willem Adriaan van Ravesteijn (Amsterdam, 2 April 1938 – Laren, North Holland, 6 January 2015) was a Dutch gallerist and art collectors in the Netherlands. He and Geert van Beijeren founded the leading Dutch art gallery Art & Project (1968–2001) and publishers of the art magazine of the same name (1968–1989). During its thirty-year existence, the gallery as well as the magazine made substantial contributions to the Dutch art climate.