South Island (disambiguation)

The South Island is the southern of the two main islands of New Zealand.

South Island may also refer to:


 * South Island (McDonald Islands)
 * South Island (South Australia), in Pondalowie Bay
 * South Island, County Down, a townland in County Down, Northern Ireland
 * Yuzhny Island, the southern of the two large islands of Novaya Zemlya
 * South Island, Cocos (Keeling) Islands
 * Suðuroy (South Island in Faroese), the southernmost of the Faroe Islands
 * South Island (Kenya), an island on Lake Turkana, Kenya