Marc Floyd Ellington OStJ DL HonFRIAS (16 December 1945 – 17 February 2021) was an American-born British folk and folk-rock singer-songwriter, guitarist and bagpiper. He recorded in Britain in the late 1960s and 1970s, and became active in conservation work in Scotland, restoring his home at Towie Barclay Castle, Aberdeenshire.