Nanzan () was one of three independent political entities which controlled the island of Okinawa in the 14th century.

Nanzan may also refer to:

Nanzan Castle, ruins of a Ryūkyūan gusuku in Itoman, Okinawa Nanzan Institute for Religion and Culture, a center for scholarly research on the interface of philosophy and religions within the East and West Nanzan University in Nagoya, Japan M6A1-K Nanzan, a variant of the Aichi M6A, a WWII submarine-launched attack floatplane designed for the Imperial Japanese Navy

See also Minamiyama, a variant pronunciation of the characters () 南山 (disambiguation) 山南 (disambiguation)