James Douglas, 3rd Earl of Angus (c. 1451–1513) was a Scottish nobleman and a prominent figure in the late medieval period. He was the son of James Douglas, 2nd Earl of Angus and Margaret Stewart, and he inherited the title of Earl of Angus after his father's death. James was known for his involvement in the political struggles of Scotland, particularly during the reign of King James IV. Throughout his life, James Douglas played a significant role in the conflicts between the Douglas family and the Crown of Scotland. He was a supporter of the Scottish Reformation and was involved in various military campaigns. His legacy includes the continued influence of the Douglas family in Scottish history.