Carrigtwohill, officially Carrigtohill[9] /ˌkærɪɡˈtuːhɪl/ (Irish: Carraig Thuathail, meaning 'Tuathal's rock'), is a town in County Cork, Ireland with a population of 5,568 (2022).

[citation needed] It is generally believed that the town's name is from Irish: Carraig Thuathail, meaning 'Tuathal's rock'.

[9] The huge rock from which Carrigtwohill derives its name is about half a mile north-eastwards of the town itself, and is in the townland of Carrigane.

[14] The biggest agricultural show in Ireland, the National Ploughing Championships took place to the east of the village in 1992.

[15] A number of multinational corporations have premises in the IDA Business Park to the west of the town, including GE Healthcare, Stryker, Merck Millipore,[16] Abbott Laboratories, Gilead Sciences and Rockwell-Proscon.

The local economy was dealt a blow in October 2007 when the biotechnology giant Amgen scrapped indefinitely its partially constructed plant at Ballyadam on the outskirts of Carrigtwohill.

[17] A number of housing developments have been built in Carrigtwohill, including Castlelake to the west, Cluain Cairn and Cul Ard to the north.

[20] A new station was officially opened on 30 July 2009 on the north of the town, with Park n' Ride facilities for commuters travelling to Cork City.

[21] There is also a soccer club, Carrigtwohill United AFC,[22] which plays at Ballyadam, to the North East of the town.