Pat O'Brien
- Born
- 10 November 1899 (83 years old)
- Passed away
- 15 October 1983
- Place of birth
- Milwaukee, Wisconsin, USA
- Gender
- Male
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.
