(b Antwerp, 2 Oct 1595; d Haarlem, after 1644). Flemish etcher, engraver and draughtsman, active in the northern Netherlands. He was probably a pupil of Pieter Claesz. Soutman in Antwerp, where he married in December 1628. In 1635 Louys was admitted to the Haarlem Guild of St Luke as an engraver. Some 18 prints by him are known, the latest of which in date are reproductive prints of royal portraits after Rubens, van Dyck and others, which he made in collaboration with Soutman (published by Soutman in 1644). Apart from these portraits, there are several etchings—occasionally lightly retouched with the burin—after genre pieces by Andries Both, Willem Kalf and Adriaen van Ostade. (This group of etchings has been attributed by some to a second, fictitious Jacob Louys.) Louys’s finest work is a monumental etching with dramatic chiaroscuro effects, the Raising of Lazarus (Hollstein, no. 1), after Jan Lievens’s painting (Brighton, A.G. & Mus.). He also produced a few drawings.