Rushen (isManx: Rosien), formally Kirk Christ Rushen, is one of the seventeen historic parishes of the Isle of Man.
It is located in the south of the island (part of the traditional South Side division) in the sheading of the same name.
Administratively, part of the historic parish of Rushen, and the majority of the population, is now covered by the village districts of Port Erin and Port St Mary. As a result, there is an exclave of the parish district which includes the Calf of Man.
Other settlements in the parish include Cregneash.