David O'Brien
Dave, Davey or David O'Brien may refer to:
Sportsmen
- Davey O'Brien, American football quarterback
- Dave O'Brien , American collegiate professor at Long Beach, Temple and Northeastern
- David O'Brien, Irish racehorse trainer during 1970s and 1980s
- Dave O'Brien , American sportscaster
- David O'Brien , Irish yacht racer in 2000 Summer Olympics
- David O'Brien , English freestyle in 2004 Summer Olympics
- David O'Brien , Scottish left-sided midfielder
- Dave O'Brien , American football player
Others
- Dave O'Brien , American film and TV performer, director and writer
- David Wright O'Brien, American fantasy and science fiction writer
- David O'Brien , American performer in daytime dramas
- David P. O'Brien, Canadian business executive since 1980s
- David O'Brien , Australian politician from Victoria