Jason with the Golden Fleece is a sculpture by Bertel Thorvaldsen. A lifesize clay version created in 1803 is considered to be the artist's first great work. The larger marble statue, reaching a height of 242 cm (95 in), was however not completed until 1828.

Jason was an ancient Greek mythological hero and leader of the Argonauts, whose quest for the Golden Fleece is featured in Greek literature. He was the son of Aeson, the rightful king of Iolcos. He was married to the sorceress Medea, the granddaughter of the sungod Helios. He was also the great-grandson of the messenger god Hermes, through his mother's side.