Carrigtwohill, officially Carrigtohill, is a town in County Cork, Ireland with a population of 5,568 (2022). It is 12 kilometres east of Cork city centre. It is connected to Cork Suburban Rail and is bypassed by the N25 road. Carrigtwohill is one of the fastest-growing towns in the region, and a hub for pharmaceutical and biotechnology companies. Carrigtwohill is part of the Cork East Dáil constituency.

Munster is one of the four provinces of Ireland, located in the south of the island. In early Ireland, the Kingdom of Munster was one of the kingdoms of Gaelic Ireland ruled by a "king of over-kings". Following the Norman invasion of Ireland, the ancient kingdoms were shired into counties for administrative and judicial purposes. In later centuries, local government legislation has seen further sub-division of the historic counties.