
Brian Donlevy (February 9, 1901 – April 5, 1972) was an Ulster-born American film actor, noted for playing tough guys from the 1930s to the 1960s. He usually appeared in supporting roles. Among his best known films are Beau Geste (1939) and The Great McGinty (1940). For his role as Sergeant Markoff in Beau Geste he was nominated for the Academy Award for Best Supporting Actor. His obituary in The Times newspaper in the United Kingdom stated that "any consideration of the American 'film noir' of the 1940s would be incomplete without him".

Brigham Young
1940 · as Angus Duncan

Kiss of Death
1947 · as Assistant D.A. Louis D'Angelo

Never So Few
1959 · as Gen. Sloan

Union Pacific
1939 · as Sid Campeau

Jesse James
1939 · as Barshee

Dead Men Don't Wear Plaid
1982 · as (in "The Glass Key") (archive footage)

Cowboy
1958 · as Doc Bender, Trailhand

In Old Chicago
1938 · as Gil Warren

Destry Rides Again
1939 · as Kent

The Virginian
1946 · as Trampas

Canyon Passage
1946 · as George Camrose

The Quatermass Xperiment
1955 · as Prof. Bernard Quatermass

The Errand Boy
1961 · as Tom 'T.P.' Paramutual

Hangmen Also Die!
1943 · as Dr. Franticek Svoboda

Wake Island
1942 · as Maj. Geoffrey Caton

Beau Geste
1939 · as Sergeant Markoff

Crack-Up
1936 · as Ace Martin

Quatermass 2
1957 · as Prof. Bernard Quatermass