Sean O'Neill (born 15 August 1980 in Limerick) is an Irish rower from St Michael's Rowing Club.

[1] O'Neill started rowing while in New Zealand but returned to Ireland in 2008 to try to secure a place in an Irish crew.

[2] O'Neill competed in the men's coxless four at the 2008 Beijing Olympics for Ireland finishing in tenth place.

He competed in the 2012 London Olympics in the men's coxless four for New Zealand finishing eleventh.

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