Jan Hermansz van Bijlert (1597 or 1598 – November 1671) was a Dutch Golden Age painter from Utrecht, one of the Utrecht Caravaggisti whose style was influenced by Caravaggio. He spent some four years in Italy and was one of the founders of the Bentvueghels circle of northern painters in Rome.
Jan van Bijlert was born in Utrecht, the son of the stained glass worker Herman Beernts van Bijlert. He may have had some training by his father. Subsequently, he became a student of Abraham Bloemaert. Like other painters from Utrecht, he travelled in France and Italy. In 1621 he was, along with Cornelis van Poelenburch and Willem Molijn, a founding member of the circle of Dutch and Flemish artists in Rome known as the Bentvueghels. It was the custom among the Bentvueghels to adopt a nickname. Van Bijlert's nickname was "Aeneas".
By 1625, he had returned to Utrecht, where he married and joined the schutterij. In 1630, he became a member of the Utrecht Guild of St. Luke