David McCallum (born 19 September 1933, Glasgow, Scotland) is a Scottish actor and son of concertmaster violinist David McCallum (2). He is perhaps best known for his role as "Illya Kuryakin" (a Russian secret agent), in the television series The Man from U.N.C.L.E. (1964-1968) and in more recent years for his role as the medical examiner "Dr. Donald 'Ducky' Mallard" in the American television series NCIS. He also released some music, recording some albums for Capitol Records with producer David Axelrod. He was married to Jill Ireland from 1957 until 1967 (divorced), with whom he has three sons including the musician Val McCallum.

D. McCallum, David Mc Callum, David McCallum Snr., David McCullan