Karel van der Pluym (1625, Leiden - 1672, Leiden), was a Dutch Golden Age painter.
He was the son of Dominicus van der Pluym (1593-1661) and Cornelia van Suytbroeck (1597-1652), the first cousin of Rembrandt.[1] According to the RKD he was a pupil of Rembrandt.[2] According to the Frick gallery, their "old woman with a book" was purchased by Henry Clay Frick in 1916 as a Rembrandt.[2] [3]