The South Barrule (Manx: Baarool Jiass) is a hill in the south of the Isle of Man. It has the remains of a fort on its summit, which is traditionally the home of the Manx god of the sea Mannanan beg mac y Leir. The hill is largely surrounded by plantations. On the south western slope of the hill the Cringle reservoir was formed to supply water to the southern part of the island. South Barrule's ancient name was Warfield or Wardfell.
A short, straight footpath links the summit with the Bayr ny Skeddan walking route and the A27Colby to Peel road which, along with the A36 Sloc road, runs over the shoulder of the hill.