Cornelis Corneliszoon van Haarlem (Dutch: [kɔrˈneːlɪs kɔrˈneːlɪsoːn vɑn ˈɦaːrlɛm]; 1562 – 11 November 1638) was a Dutch Golden Age painter and draughtsman, one of the leading Northern Mannerist artists in the Netherlands, and an important forerunner of Frans Hals as a portraitist.