Often confused with the British-born comic actor J. Pat O'Malley, who is the better remembered, silent dramatic film star Pat O'Malley had an enduring career that stands on its own. He was of solid Irish-American stock, born in Forest City, Pennsylvania, in 1890. A one-time railroad switchman, he also had circus experience by the time he discovered an interest in movie making. He began with the Kalem Studio in 1913 and appeared in a few Irish films before signing on with Thomas Edison's company in 1914. The following year, he married actress Lillian Wilkes, and three of their children, Eileen, Mary Katherine, and Sheila, would become actors as well. His brother Charles O'Malley was a sometime actor, appearing in westerns on occasion. His first identifiable film is The Alien (1913). He began freelancing in 1916 and from then on, appeared in scores of silents as both a rugged and romantic lead, some classic films being The Heart of Humanity (1918), My Wild Irish Rose (1922), and The Virginian (1923). He did not age well come sound pictures, and he was quickly relegated to supporting parts. He appeared in hundreds upon hundreds of bits (mostly unbilled) until 1956, when he retired. He died a decade later.
| Movie | Days of Wine and Roses | Tenant (uncredited) | 1963-02-04 |
| Series | The Twilight Zone | Mr. Wilson | 1959-10-02 |
| Movie | Blackjack Ketchum Desperado | Doc Blaine | 1956-04-01 |
| Series | Highway Patrol | Unknown | 1955-10-03 |
| Movie | A Star Is Born | Racetrack Spectator (uncredited) | 1954-10-01 |
| Movie | Small Town Girl | Doorman | 1953-04-10 |
| Movie | The Wild One | Sawyer (uncredited) | 1953-12-30 |
| Movie | Everything I Have Is Yours | Conductor (Uncredited) | 1952-10-31 |
| Movie | The Old West | Townsman (uncredited) | 1952-09-29 |
| Movie | The Bad and the Beautiful | Man Outside the Club (uncredited) | 1952-12-25 |
| Movie | Mule Train | Charley Stewart (uncredited) | 1950-02-22 |
| Movie | The Killer That Stalked New York | Police Sergeant (uncredited) | 1950-10-06 |
| Movie | Boston Blackie's Chinese Venture | Officer Jim | 1949-03-02 |
| Movie | The Doolins of Oklahoma | Deputy Marshal (uncredited) | 1949-05-27 |
| Movie | Alias Nick Beal | Committee Man | 1949-03-04 |
| Movie | The Secret Of St. Ives | Sergeant (uncredited) | 1949-06-30 |
| Movie | The Big Steal | Purser (uncredited) | 1949-07-01 |
| Movie | All the King's Men | Politician (uncredited) | 1949-11-16 |
| Movie | The Man from Colorado | Citizen (uncredited) | 1948-08-07 |
| Movie | Key Witness | Detective Norris (uncredited) | 1947-10-09 |
| Movie | The Whistler | Police Detective in Alley (Uncredited) | 1944-03-30 |
| Movie | The Racket Man | Postman | 1944-01-18 |
| Movie | One Mysterious Night | Police Sergeant (Uncredited) | 1944-10-21 |
| Movie | The Missing Juror | Priest (Uncredited) | 1944-11-16 |
| Movie | Redhead from Manhattan | Cop | 1943-05-06 |
| Movie | Quiet Please, Murder | Guard Killed in Library | 1943-03-19 |
| Movie | Mission to Moscow | Irish-American in Montage (uncredited) | 1943-04-29 |
| Movie | Batman | Cop | 1943-07-16 |
| Movie | Destroyer | Postman | 1943-08-19 |
| Movie | Gang Busters | Police Chemist Crandall | 1942-03-31 |
| Movie | Murder in the Big House | Guard (uncredited) | 1942-04-11 |
| Movie | Blue, White, and Perfect | Police Sergeant | 1942-01-06 |
| Movie | Over My Dead Body | Petie Stuyvesant (as J. Patrick O'Malley) | 1942-01-15 |
| Movie | Two Yanks in Trinidad | Lieutenant (uncredited) | 1942-03-26 |
| Movie | This Gun for Hire | Conductor (uncredited) | 1942-04-24 |
| Movie | Deep in the Heart of Texas | Jonathan Taylor | 1942-09-25 |
| Movie | Gentleman Jim | Detective (uncredited) | 1942-11-14 |
| Movie | The Glass Key | Politician (uncredited) | 1942-09-08 |
| Movie | Thru Different Eyes | Coroner | 1942-06-19 |
| Movie | Pals of the Pecos | Dan Burke | 1941-04-07 |
| Movie | The Great Mr. Nobody | Policeman | 1941-02-15 |
| Movie | Blonde Inspiration | Police Sergeant (uncredited) | 1941-02-07 |
| Movie | Cracked Nuts | Officer #1 | 1941-07-02 |
| Movie | Law of the Range | Mr. Howard | 1941-06-20 |
| Movie | Steel Against the Sky | Construction Worker (uncredited) | 1941-12-13 |
| Movie | Honky Tonk | Party Guest (uncredited) | 1941-10-01 |
| Movie | The Great Man's Lady | Officer Murphy (uncredited) | 1941-10-31 |
| Movie | Reg'lar Fellers | Mr. Dugan Sr. | 1941-09-05 |
| Movie | The House Across the Bay | Prison Guard | 1940-03-01 |
| Movie | Shooting High | Lem Pritchard | 1940-04-25 |
| Movie | Castle on the Hudson | Guard (uncredited) | 1940-02-17 |
| Movie | The Man Who Wouldn't Talk | Laboratory Technician | 1940-01-11 |
| Movie | Emergency Squad | Fire Captain | 1940-01-05 |
| Movie | Tear Gas Squad | Patrolman | 1940-05-04 |
| Movie | Remember the Night | Jury Member (uncredited) | 1940-01-19 |
| Movie | The Saint's Double Trouble | Express Man (uncredited) | 1940-01-26 |
| Movie | Lucky Cisco Kid | Minor Role | 1940-06-28 |
| Movie | The Bank Dick | Cop (uncredited) | 1940-11-29 |
| Movie | The Green Hornet Strikes Again! | Editor Gunnigan | 1940-12-24 |
| Movie | Rocky Mountain Rangers | Captain Taylor | 1940-05-24 |
| Movie | East of the River | Policeman (uncredited) | 1940-11-09 |
| Movie | Little Nellie Kelly | Mounted Policeman (uncredited) | 1940-11-22 |
| Movie | A Fugitive from Justice | Policeman (uncredited) | 1940-06-15 |
| Movie | Girl in 313 | Bartender | 1940-05-31 |
| Movie | A Dispatch from Reuters | Laborer (uncredited) | 1940-10-19 |
| Movie | Dodge City | Conductor (uncredited) | 1939-04-08 |
| Movie | They Made Her a Spy | Intelligence Service Man | 1939-04-14 |
| Movie | Women in the Wind | Cleveland Official (uncredited) | 1939-04-15 |
| Movie | Let Us Live | Captain (uncredited) | 1939-03-29 |
| Movie | The Phantom Creeps | AMI Chief | 1939-01-07 |
| Movie | Persons in Hiding | Deputy Driver (uncredited) | 1939-02-10 |
| Movie | Secret Service of the Air | Guard Cooper | 1939-03-04 |
| Movie | Sergeant Madden | Police Sergeant | 1939-03-24 |
| Movie | Romance of the Redwoods | Yerkes | 1939-03-29 |
| Movie | Wolf Call | RCMP Sergeant | 1939-05-22 |
| Movie | The Roaring Twenties | Jailer (uncredited) | 1939-10-28 |
| Movie | The Light That Failed | Bullock | 1939-12-24 |
| Movie | Invisible Stripes | Jailhouse Lieutenant with Capt. Johnson (uncredited) | 1939-12-30 |
| Movie | Stunt Pilot | Sheehan | 1939-06-30 |
| Movie | The Housekeeper's Daughter | Policeman | 1939-10-26 |
| Movie | Smashing the Money Ring | Second Convict Custodian on Train (uncredited) | 1939-10-21 |
| Movie | Mr. Moto Takes a Vacation | Police Guard (uncredited) | 1939-07-07 |
| Movie | Frontier Marshal | Bar Patron | 1939-07-28 |
| Movie | Dust Be My Destiny | Bailiff (uncredited) | 1939-09-16 |
| Movie | The Escape | Neighbor | 1939-10-05 |
| Movie | Love on a Budget | Townsman | 1938-03-04 |
| Movie | He Couldn't Say No | Policeman in Car | 1938-03-19 |
| Movie | Always Goodbye | Cop (uncredited) | 1938-06-24 |
| Movie | Parnell | Irishman | 1937-06-04 |
| Movie | Ever Since Eve | Police Officer (uncredited) | 1937-07-15 |
| Movie | The Great Hospital Mystery | Detective | 1937-05-14 |
| Movie | Music for Madame | Policeman (Uncredited) | 1937-10-08 |
| Movie | Alcatraz Island | Prison Guard (uncredited) | 1937-10-13 |
| Movie | Trouble for Two | Purser (Uncredited) | 1936-05-29 |
| Movie | Champagne Charlie | Ship's Officer | 1936-05-06 |
| Movie | Exclusive Story | Third Officer (uncredited) | 1936-01-17 |
| Movie | The Big Noise | Boyle, Policeman with Kerrigan (uncredited) | 1936-06-22 |
| Movie | Paddy O'Day | Immigration Officer Tom Wilson | 1936-01-17 |
| Movie | 36 Hours to Kill | G-Man | 1936-07-24 |
| Movie | High Tension | Ship's Mate | 1936-07-10 |
| Movie | Hollywood Boulevard | Pat O'Malley - Pago Pago Patron | 1936-08-20 |
| Movie | Wanted: Jane Turner | Joe - Lansing's Assistant (uncredited) | 1936-12-04 |
| Movie | Beloved Enemy | Patrick Callahan | 1936-12-25 |
| Movie | Special Agent | Roark (uncredited) | 1935-09-14 |
| Movie | The Perfect Clue | Police Officer | 1935-03-13 |
| Movie | His Family Tree | Seated Pub Sailor | 1935-09-29 |
| Movie | Public Hero Number 1 | Federal Agent (uncredited) | 1935-05-31 |
| Movie | The Fighting Marines | Capt. Grayson [Ch. 1] | 1935-11-22 |
| Movie | We're Only Human | Police Officer Jordan | 1935-12-27 |
| Movie | Heir to Trouble | Mining Engineer | 1935-12-17 |
| Movie | The Crime Doctor | Detective (uncredited) | 1934-03-14 |
| Movie | Pirate Treasure | John Craig | 1934-01-29 |
| Movie | Girl in Danger | Police Sgt. Rollins (uncredited) | 1934-09-11 |
| Movie | The Whirlwind | Pat Patrick | 1933-04-13 |
| Movie | Mystery of the Wax Museum | Plainclothesman (Uncredited) | 1933-02-18 |
| Movie | Frisco Jenny | Policeman Pat O'Hoolihan | 1933-01-14 |
| Movie | I Love That Man | Prison Interne | 1933-07-07 |
| Movie | Parachute Jumper | Pilot (uncredited) | 1933-01-28 |
| Movie | Perils of Pauline | Tim Sullivan | 1933-11-05 |
| Movie | Laughing at Life | Detective Agency Official | 1933-07-12 |
| Movie | Morning Glory | Actor (uncredited) | 1933-08-18 |
| Movie | A Man of Sentiment | Officer Ryan | 1933-09-15 |
| Movie | Before Dawn | Detective Brady (uncredited) | 1933-08-04 |
| Movie | Riot Squad | Det. Bob Larkin | 1933-07-25 |
| Movie | Attorney for the Defense | Dr. Strong | 1932-05-21 |
| Movie | The Trial of Vivienne Ware | Broadcast Sergeant (uncredited) | 1932-05-01 |
| Movie | The Shadow of the Eagle | Ames | 1932-02-01 |
| Movie | Speed Madness | McCarey | 1932-07-29 |
| Movie | The Reckoning | Bob | 1932-02-15 |
| Movie | Klondike | Burke | 1932-08-29 |
| Movie | Call Her Savage | Fireman (Uncredited) | 1932-11-24 |
| Movie | The Penal Code | Sergeant Detective W. J. Bender | 1932-12-23 |
| Movie | American Madness | 1932-08-15 | |
| Movie | Those We Love | Daley | 1932-09-11 |
| Movie | Exposure | Van Avery - City Editor | 1932-08-20 |
| Movie | The Costume Falls | 1931-02-05 | |
| Movie | Homicide Squad | Man | 1931-08-01 |
| Movie | The Fighting Marshal | Deputy Ed Myers | 1931-11-25 |
| Movie | Anybody's Blonde | Reporter | 1931-11-01 |
| Movie | Night Life in Reno | District Attorney | 1931-11-01 |
| Movie | The Fall Guy | Charles Newton | 1930-06-15 |
| Movie | Mothers Cry | Frank Williams | 1930-12-04 |
| Movie | The Man I Love | D.J. McCarthy | 1929-05-25 |
| Movie | My Old Dutch | Joe Brown | 1926-05-23 |
| Movie | Proud Flesh | Patrick O'Malley | 1925-04-27 |
| Movie | Happiness | Fermoy MacDonough | 1924-03-09 |
| Movie | The Virginian | Steve | 1923-09-29 |
| Movie | The Eternal Struggle | Bucky O'Harra | 1923-10-08 |
| Movie | Go and Get It | Kirk Connelly | 1920-07-18 |
| Movie | Dinty | Jack North | 1920-11-21 |
| Movie | The Red Glove | Kern Thodes (early chapters) | 1919-03-17 |
| Movie | The Heart of Humanity | Clancy | 1918-12-21 |
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