Jock O'Brien may refer to:
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Jock O'Brien (footballer, born 1909) (1909–1985), Australian rules footballer for Essendon
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Jock O'Brien (footballer, born 1937), Australian rules footballer for North Melbourne
See also
*
John O'Brien (disambiguation) John O'Brien may refer to:
Public officials American
* John O'Brien (Ohio politician) (1932–1985), former member of the Ohio House of Representatives
* John D. O'Brien, state senator in the 1997–1998 Massachusetts legislature
* John F. O ...
{{hndis, name=Obrien, Jock