Peter O'Brien explained
Peter O'Brien may refer to:
Sportsmen
- Peter O'Brien (outfielder) (born 1990), MLB outfielder, 2015–present
- Pete O'Brien (1900s second baseman) (1877–1917), MLB second baseman, 1901–1907
- Pete O'Brien (1890s second baseman) (1867–1937), MLB second baseman, 1887–1890
- Pete O'Brien (first baseman) (born 1958), MLB first baseman, 1982–1993
- Peter O'Brien (Gaelic footballer), Gaelic football goalkeeper
- Peter O'Brien (rugby league) (1928–2016), Australian rugby league footballer
- Peter O'Brien (hurler) (born 1987), Irish hurler
Others
See also