en James O%27Neill

James or Jimmy O'Neill may refer to:

James O'Neill (actor, born 1847) (1847–1920), father of the playwright Eugene O'Neill
James O'Neill (actor, born 1863) (1863–1938), vaudeville and early film actor
James E. O'Neill (1929–1987), American acting Archivist for the National Archives
James O'Neill (baseball) (died 1993), winner of College World Series Most Outstanding Player award in 1952
James O'Neill (New Zealand politician) (1819–1882)
James O'Neill (Washington politician) (1824–1913), American politician in Oregon and Washington states
James O'Neill (priest) (died 1922), founder of the Knights of Saint Columbanus
James O'Neill (jurist) (1847–1929), American jurist and politician
James O'Neill (Wisconsin settler) (1810–1882), American settler, politician, and sawmill owner
James Ryan O'Neill (born 1947), Australian serial killer
Jimmy O'Neill (footballer, born 1931) (1931–2007), Irish international footballer
James P. O'Neill (born 1950s), New York City police commissioner
James R. O'Neill (1833–1863), American Civil War artist and correspondent
Jamie O'Neill (born 1962), Irish author
Tip O'Neill (baseball) (1860–1915), Canadian Baseball Hall of Fame inductee
James Hugh O'Neill (1892–1972), American Catholic priest
James E. O'Neill Jr. (1929–2002), Michigan politician

James O'Neill