Robert Ronald McIan (1803 – 13 December 1856), also Robert Ranald McIan, was an actor and painter of Scottish descent. He is best known for romanticised depictions of Scottish clansmen, their battles and domestic life.
He is perhaps best known for his illustrations in The Clans of The Scottish Highlands, published in 1845 on the centenary of the Jacobite Rising with text by James Logan. It proved so popular that it was reissued in 1857, after his death. His depictions of clansmen fanned the romantic revival of interest in Gaeldom that was led by Queen Victoria, to whom the book was dedicated.