David O'Brien

David or Dave O'Brien may refer to:

Sports

• David O'Brien (footballer) (born 1984), Scottish footballer for Greenock Morton
• David O'Brien (racehorse trainer), Irish former racehorse trainer
• Dave O'Brien (sportscaster) (born 1963), American sportscaster
• Dave O'Brien (athletic director) (1956–2014), American athletic director at Long Beach State, Temple University and Northeastern University
• Davey O'Brien (1917–1977), American football quarterback

Others

• David O'Brien (actor) (1937–1989), American soap opera actor
• David O'Brien (politician) (born 1970), Australian politician
• David P. O'Brien, Canadian businessman
• Dave O'Brien (actor) (1912–1969), American film actor, director and writer
• David O'Brien (Thunder Bay), on the Board of Directors of the Thunder Bay Port Authority