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.
  Siren of Atlantis
  Theodora Goes Wild
  Hangmen Also Die!
  The Fighting Seabees
  A Star Is Born
  History Is Made at Night
  Bombshell
  Dishonored Lady
  Walk a Crooked Mile
  Abandoned
  The Company She Keeps
  Raw Deal
  T-Men
  Blonde Venus
  Lady Killer
  Woman on the Run
  The Leopard Man
  Brewster's Millions
  Cover Up
  Topper Returns
  Saratoga
  Show Boat
  You'll Find Out
  Dragoon Wells Massacre
  The Story of Dr. Wassell
  Night After Night
  The Fake
  The Diamond Wizard
  Broadway Bill
  Under Eighteen
  Lady Scarface
  Riding on Air
  A Yank at Oxford
  All Hands on Deck
  The Firefly
  Love Before Breakfast
  One Big Affair
  Drums of Tahiti
  Lady of Vengeance
  Arise, My Love
  Pop Always Pays
  Las Vegas Shakedown
  Wonder Bar
  Doll Face
  Mr. District Attorney
  Mr. District Attorney
  Up in Mabel's Room
  Getting Gertie's Garter
  That's Right – You're Wrong
  Broadway Limited
  The Affairs of Susan
  The Kid From Texas
  Tahiti Honey
  Honeymoon Trio
  He Was Her Man
  Chicago Syndicate
  Everything I Have Is Yours
  Abroad with Two Yanks
  Passage West
  Bowery Boy
  The Great Dan Patch
  Smarty
  The Affairs of Jimmy Valentine
  Sensations of 1945
  A Lost Lady
  The Eagle and the Hawk
  Weekend for Three
  Follow the Sun
  Hold That Kiss
  Burn 'Em Up O'Connor
  Angela
  Earl Carroll Vanities
  Reaching for the Moon
  Hello, Everybody!
  The Gilded Lily
  The Lady Wants Mink
  Bachelor's Affairs
  Vacation from Love
  The Bad Man of Brimstone
  The Wedding Night
  Small Town Girl
  Easy Living
  Two Heads on a Pillow
  One New York Night
  Rose Bowl
  Swing High, Swing Low
  Girl Missing
  I'm No Angel
  The Naked Flame
  The Misses Stooge
  Too Much Harmony
  Walter Wanger's Vogues of 1938
  The Prizefighter and the Lady
  Baby Face Harrington
  Broadway Hostess
  Colleen
  Desirable
  Beloved Enemy
  Make Way for Tomorrow
  Personal Maid's Secret
  Sworn Enemy
  Strike Me Pink
  Here Comes the Band
  Alias the Deacon
  Mama Steps Out
  Broadway Thru a Keyhole
  I Am a Fugitive from a Chain Gang
  Jimmy the Gent
  Inside Detroit
  Fury
  Moonlight Masquerade
  Girl from Havana
  Kid Millions
  The Red Rider
  The Great Gambini
  The Eagle and the Hawk
  The Daring Young Man
  Libeled Lady
  Mr. Deeds Goes to Town
  Duck Soup
  Burning Gold
  The Girl from Scotland Yard
  I'm Nobody's Sweetheart Now
  Unexpected Father
  La Conga Nights
  Good Morning, Judge
  Captains Courageous
  Scarface
  Hi Diddle Diddle
  Gold Diggers of 1933
  The Singing Kid
  Huddle
  Everything's Ducky
  From Hell to Heaven
  One Mile from Heaven
  Piccadilly Jim
  Gift of Gab
  It's in the Air
  Blood Money
  Champagne Waltz
  Murder at the Vanities
  We're Rich Again
  Cimarron
  Rhythm on the Range
  The Big Broadcast of 1937
  Skyscraper Souls
  Doubting Thomas
  She Had to Say Yes
  The Man from Yesterday
  All of Me
  Sinner Take All
  Top of the Town
  The Phantom of the Air
  San Francisco
  Lady by Choice
  Top Hat
  Working Girls
  A Night at the Biltmore Bowl
  The Cabin in the Cotton
  13 Hours by Air
  Three Smart Girls
  The Miracle Woman
  The Chaser
  The Accusing Finger
  College Rhythm
  Torch Singer
  42nd Street
  Coming Out Party
  A Feather in Her Hat
  Only Yesterday
  Imitation of Life
  Love Affair
  Big City Blues
  A Bill of Divorcement
  Every Night at Eight
  Her Adventurous Night
  Central Park
  Fog Over Frisco
  Private Number
  Great Guy
  Merrily We Go to Hell
  Sail Into Danger
  Laugh and Get Rich
  Cocktail Hour
  Mississippi
  Yours for the Asking
  The Woman Accused
  West of Broadway
  Confession
  Ann Carver's Profession
  Upperworld
  White Lies
  Petticoat Junction
  Studio One
  Lux Video Theatre
  Schlitz Playhouse of Stars
  Your Show of Shows
  Climax!
  Riverboat
  Suspense
  Robert Montgomery Presents
  The Dennis O'Keefe Show
  The Steve Allen Show
  Suspicion
  Lux Video Theatre
  Lux Video Theatre
  Lux Video Theatre
  Lux Video Theatre
  The Gulf Playhouse
  Climax!
  Climax!
  Climax!
  Screen Director's Playhouse