Sir Patrick Fairweather KCMG (born 17 June 1936) is a British retired diplomat. He served as Ambassador to Angola from 1985 to 1987 and Ambassador to Italy and concurrently Albania from 1992 to 1996. He was director of the Butrint Foundation which was concerned with the archaeology and conservation of the classical site of Butrint in southern Albania from 1997 until 2004.