Castletown Golf Links is a championship links course at Derbyhaven on the Isle of Man. Its setting on Langness Peninsula provides views of the Irish Sea from all tees, fairways, and greens. The Links was founded in originally laid out by Old Tom Morris in 1891, with Castletown Golf Club founded in 1892. Dr Alister MacKenzie made significant improvements and alterations to the course in 1913. After the war the course was updated by Mackenzie Ross.