Sean Cahill is a hurling player from County Laois in Ireland, who plays for Harps GAA.
Cahill usually plays in defence for the Harps and in 2003 was part of the Harps team that won the Laois Minor Hurling Championship title for the first time since 1997. The following year he played at corner back for his club junior team who won the Laois junior A title. In 2006 Cahill was part of the Harps team that won the Laois U21 Hurling Championship. In 2007 he was named captain of the Harps intermediate team.