John Green (died September 3, 1802) was a portrait painter who later became a judge. Born in the Thirteen Colonies, he later migrated to Bermuda, where he died. Nothing is known of Green's origins; he is first documented in Philadelphia in the late 1750s, when he sat for a portrait drawing by Benjamin West. The source of his early training is unknown, though it is possible that he learned to paint miniatures in Philadelphia, as did West. In September 1774 he traveled to London for further study, and renewed his acquaintance with West at that time. He does not appear to have remained in England long, and was likely back in Bermuda within the year.