Nam District is a gu, or district, in south-central Busan, South Korea. Much of Nam District sticks out into the Sea of Japan, forming a peninsula which separates Suyeong Bay from Busan Harbor. It has an area of 25.91 km². Nam District officially became a gu of Busan in 1975. In 1995 part of Nam District was divided to form Suyeong District.