
Dennis O'Keefe (March 29, 1908 – August 31, 1968) was an American actor. He was the son of Irish vaudevillians working in the United States. As a small child he joined his parents' act and later wrote skits for the stage.
O'Keefe started in films as an extra in the early 1930s. After a small but impressive role in Saratoga, Clark Gable recommended O'Keefe to Metro-Goldwyn-Mayer, which signed him to a contract in 1937. His film roles were bigger after that, starting with The Bad Man of Brimstone and Burn 'Em Up O'Connor.
O'Keefe left MGM around 1940 but continued to work in mostly lower budget productions. In the 1950s he did some directing, wrote mystery stories and by the mid-1950s found work on television shows such as Justice, The Martha Raye Show, The Ford Show as well as his own series The Dennis O'Keefe Show.

Scarface
1932 · as Night Club Patron (uncredited)

T-Men
1947 · as Dennis O'Brien / Vannie Harrigan

Duck Soup
1933 · as Bridegroom at Firefly's Reception (uncredited)

Libeled Lady
1936 · as Barker at Charity Affair (uncredited)

Working Girls
1931 · as Dance Extra (uncredited)

Captains Courageous
1937 · as Bit Role (uncredited)

Fury
1936 · as Reporter (uncredited)

A Star Is Born
1937 · as Burke's Party Guest (uncredited)

Top Hat
1935 · as Elevator Passenger / Hotel Guest / Dancer (uncredited)

Hangmen Also Die!
1943 · as Jan Horak

42nd Street
1933 · as Chorus Boy (uncredited)

Arise, My Love
1940 · as Shep

Gold Diggers of 1933
1933 · as Theatregoer (uncredited)

Mr. Deeds Goes to Town
1936 · as Courtroom Reporter (uncredited)

Cover Up
1949 · as Sam Donovan

Wonder Bar
1934 · as Chorus Boy (uncredited)

I'm No Angel
1933 · as Courtroom Reporter (uncredited)

Moonlight Masquerade
1942 · as John Bennett Jr.