Jack O'Brien may refer to:

Sports

* Jack O'Brien (American football) (born 1932), American football player * Jack O'Brien (catcher) (1860–1910), Major League Baseball player * Jack O'Brien (cricketer) (1886–1939), New Zealand cricketer * Jack O'Brien (footballer, born 1887) (1887–1959), Australian rules footballer for Essendon and Fitzroy * Jack O'Brien (footballer, born 1893) (1893–1934), Australian rules footballer for South Melbourne * Jack O'Brien (footballer, born 1898) (1898–1966), Australian rules footballer for Essendon and Footscray * Jack O'Brien (footballer, born 1906) (1906–1970), Australian rules footballer for South Melbourne and Hawthorn * Jack O'Brien (outfielder) (1873–1933), American baseball player * Jack O'Brien (wrestler) (1910–1982), American-born Mexican professional wrestler *

Philadelphia Jack O'Brien Joseph Francis Hagan (better known as Philadelphia Jack O'Brien) (January 17, 1878 – November 12, 1942) was an American list of world light-heavyweight boxing champions, world light heavyweight boxing champion in 1905 when he defeated Bob Fitzs ...

(1878–1942), American boxer, former light heavyweight boxing champion of the world * Young Jack O'Brien (1894–?), lightweight boxer from Pennsylvania

Others

Jack O'Brien (director) Jack O'Brien (born June 18, 1939) is an American director, producer, writer and lyricist. He served as the Artistic Director of the Old Globe Theatre in San Diego, California from 1981 through the end of 2007. O'Brien has won three Tony Awards ...

(born 1939), American theatre director and producer *

Jack O'Brien (jazz pianist) Jack "Bones" O'Brien ''(né'' John Roger O'Brien; 16 October 1903 – 12 October 1982) was an American jazz pianist and songwriter from Allentown, Pennsylvania. Notably, O'Brien was pianist, composer, and arranger with the Ted Weems orchestra f ...

(1903–1982), big band pianist and songwriter *

John B. O'Brien John B. "Jack" O'Brien (December 13, 1884 – August 15, 1936) was an American actor and film director of the silent era. He appeared in more than 80 films between 1909 and 1936. He also directed 53 films between 1914 and 1926. Biography O' ...

(known as Jack, 1884-1936), American actor and film director * Jack O'Brien, founder of American website of

Cracked.com Cracked.com is an American website that was based on ''Cracked'' magazine. It was founded in 2005 by Jack O'Brien.Axon, SamuelStreamy Awards 2010: Here Are the Winners ''Mashable''. April 11, 2010. In 2007, Cracked had a couple of hundred thou ...

Sports

Others

See also