Con O'Neill or Conn O'Neill may refer to:
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Conn O'Neill (d. 1482), lord of Clandeboye in medieval Ireland
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Conn O'Neill, 1st Earl of Tyrone
Conn Bacagh O'Neill, 1st Earl of Tyrone ( Irish: ''Conn Bacach mac Cuinn Ó Néill'') (c. 1480–1559), was king of Tyrone. In 1541 O'Neill travelled to England to submit to Henry VIII as part of the surrender and regrant policy that coincide ...
(c. 1480–1559), King of
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Conn O'Neill (prisoner), seventeenth century Irish aristocrat
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Con O'Neill (actor)
Robert "Con" O'Neill (born 15 August 1966) is an English actor. He started his acting career at the Everyman Theatre and became primarily known for his performances in musicals. He received critical acclaim and won a Laurence Olivier Award for ...
(born 1966), British actor
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Con O'Neill (diplomat) (1912–1988), British diplomat
{{hndis, Oneill, Con