Sean O'Neill

Sean O'Neill is the name of:


 * Seán O'Neill (born 1938), Gaelic football player for Down
 * Sean O'Neill (table tennis) (born 1967), American table tennis player and coach
 * Seán O'Neill (hurler) (born 1972), Irish hurler for Limerick
 * Sean O'Neill (rower) (born 1980), Irish / New Zealand rower
 * Sean O'Neill (actor) (born 1985), Canadian, actor and arts professional
 * Sean O'Neill (footballer) (born 1988), association footballer
 * Sean O'Neill (Louth Gaelic footballer) (born c. 1980), Gaelic football player for Louth
 * Sean O'Neill, Irish musician, better known as John O'Neill (guitarist)