Maria van Oosterwijck, (Aug 20, 1630, Nootdorp - Nov 12, 1693, Uitdam) was a Dutch Baroque painter, specializing in richly detailed still-lifes.
Her name is sometimes spelled Oosterwyck.
She was a student of Jan Davidsz de Heem. Van Oosterwijck worked in Delft and later in Amsterdam (1675-1689), where she lived opposite the workshop of Willem van Aelst. She was popular with European royalty, including Emperor Leopold, Louis XIV in France and William III of England. Despite this, as a woman, she was not allowed to join the painters' guild.