Castletown Geoghegan is a Gaelic Athletic Association club based in Castletown Geoghegan, County Westmeath, Ireland. The club first fielded a championship team in 1920 and is almost exclusively concerned with the game of hurling. In senior hurling Castletown Geoghegan compete annually in the Westmeath Senior Hurling Championship, which they have won fourteen times as of 2022. The club also competes in various other championships in all grades within Westmeath.