The Southwest Penang Island District (Malay: Daerah Barat Daya Pulau Pinang) is a district within the Malaysian state of Penang. The district covers the southwestern half of Penang Island and borders the Northeast Penang Island District to the east. It has an area of 175 km2 (68 sq mi) and a population of 197,131 as of 2010. Balik Pulau is the district's administrative centre, while Bayan Lepas is the largest town within the district.