Alan O'Neill may refer to:
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Alan O'Neill (footballer, born 1937), English football player for Sunderland and Aston Villa
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Alan O'Neill (footballer, born 1957), Irish football player and manager of Shamrock Rovers
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Alan O'Neill (footballer, born 1973), Irish football player for Birmingham City
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Alan O'Neill (actor) (1971–2018), Irish actor
{{hndis, Oneill, Alan