Jan van Ryen (fl. 1620s–1630s) was a 17th-century Dutch privateer, explorer, and colonist. He was granted a commission by the Dutch West Indies Company and active against the Spanish in the West Indies during the 1620s. He and attempted to establish Dutch colonies in Guyana, although they both failed with most Dutch colonists being killed by natives in 1627. However, Zeelandian merchant Abraham van Peere was able to found a successful colony in the area shortly after.