Biography
Pat O'Brien (born William Joseph Patrick O'Brien) was an American stage, screen, radio, and television actor. He was a star during the first several years of his film career, the height of his popularity being during the 1930s and 1940s.

Acting
Milwaukee, Wisconsin, USA
Born · Died
Pat O'Brien (born William Joseph Patrick O'Brien) was an American stage, screen, radio, and television actor. He was a star during the first several years of his film career, the height of his popularity being during the 1930s and 1940s.

Angels with Dirty Faces: Whaddya Hear? Whaddya Say?· 2005
Self (archive footage)

James Cagney: That Yankee Doodle Dandy· 1981
Self

Ragtime· 1981
Delmas

The End· 1978
Ben Lawson

The Phynx· 1970
Pat O’Brien

The Over the Hill Gang· 1969
Captain Oren Hayes

Some Like It Hot· 1959
Detective Mulligan

The Last Hurrah· 1958
John Gorman

Kill Me Tomorrow· 1957
Bart Crosbie

Criminal Lawyer· 1951
James 'Jimmy' Regan

The People Against O'Hara· 1951
Det. Vincent Ricks

Johnny One-Eye· 1950
Martin Martin

The Fireball· 1950
Father O'Hara

A Dangerous Profession· 1949
Joe Farley

The Boy with Green Hair· 1948
Gramp Fry

Riff-Raff· 1947
Dan Hammer

Crack-Up· 1946
George Steele

Secret Command· 1944
Sam Gallagher

Bombardier· 1943
Chick Davis

His Butler's Sister· 1943
Martin Murphy

The Iron Major· 1943
Francis William 'Frank' / 'Cav' Cavanaugh

Broadway· 1942
Dan McCorn

Flight Lieutenant· 1942
Samuel J. 'Sam' Doyle

The Navy Comes Through· 1942
Chief Michael 'Mike' Mallory

'Til We Meet Again· 1940
Steve Burke

Castle on the Hudson· 1940
Warden Walter Long

Flowing Gold· 1940
Ian 'Hap' O'Connor

Knute Rockne All American· 1940
Knute Rockne

The Fighting 69th· 1940
Father Duffy

Torrid Zone· 1940
Steve Case

Slightly Honorable· 1939
John Webb

The Kid from Kokomo· 1939
William Jennings 'Billy / 'Square Shooting Murph' Murphy

Angels with Dirty Faces· 1938
Jerry Connolly

Boy Meets Girl· 1938
J. Carlyle 'J.C.' Benson

Cowboy from Brooklyn· 1938
Roy Chadwick

Swingtime in the Movies· 1938
Himself (uncredited)

San Quentin· 1937
Capt. Stephen Jameson

The Great O'Malley· 1937
James Aloysius 'Jim' / 'Jimmy' O'Malley

Ceiling Zero· 1936
Jake L. Lee

China Clipper· 1936
Dave Logan

Flirtation Walk· 1934
"Scrapper" Thornhhill

Gambling Lady· 1934
Charlie Lang

Here Comes the Navy· 1934
Biff Martin

The Personality Kid· 1934
Ritzy

Twenty Million Sweethearts· 1934
Rush Blake

Bombshell· 1933
Jim Brogan

Bureau of Missing Persons· 1933
Detective Butch Saunders

Laughter in Hell· 1933
Barney Slaney