The title Duke of Ross has been created twice in the Peerage of Scotland, both times for younger sons of the Kings of Scotland. It was first created in 1481 for James Stewart, the second son of King James III of Scotland. On his early death in 1504 the title became extinct. Subsidiary titles were Marquess of Ormonde (1476), Earl of Ardmannoch (1488), and Baron of Brechin and Nevar (1488), all in the Peerage of Scotland.
The title was created a second time for Alexander Stewart, the youngest son of King James IV of Scotland. On his death at the age of 1 in 1515 the title became extinct.