Castletown, County Cork

Castletown is the name of several places in County Cork in Ireland, including:
 * Castletown Berehaven (or Castletown-Bearhaven), a port town in West Cork also known as Castletownbere.
 * Castletown-Kinneigh, or Baile Chaisleáin Chinn Eich, a small village in the townland of Castletown in the civil parish of Kinneigh in inland South West Cork
 * Castletown, Castletownroche, a townland in the civil parish of Castletownroche in inland North Cork
 * Castletown, Kinure, a townland in the civil parish of Kinure, near Oysterhaven on the southern coast of Cork
 * Castletown, Mogeely, a townland in the civil parish of Mogeely in inland East Cork