Aerial view of Gangnam-gu and Seocho-gu
Gangnam (강남; 江南 Gangnam, "South of the River"), officially the Gangnam-gu (강남구; 江南區) is one of the 25 gu (local government districts) which make up the city of Seoul, South Korea. Gangnam is one of the most affluent areas of Seoul, and one of the wealthiest neighborhoods in all of South Korea. Gangnam Area usually refers to 3 gu combined with neighboring Seocho and Songpa as well as Gangnam itself.
Gangnam is considered to be the wealthiest and most powerful district in all of South Korea. The extreme wealth concentrated in Gangnam has been compared to cities such as Beverly Hills in California. Its real estate is the most expensive in South Korea, and the value of its 15 square miles (39 km2) exceeds the entire value of the city of Busan, South Korea's second largest city. Combined with the neighboring districts of Seocho and Songpa, they account for 10% of the value of all real estate in South Korea. 
Many of Korea's largest and internationally known corporations have headquarters or offices in Gangnam, including Samsung. It is also the hub of the country's financial and banking sectors. It is also home to a large number of elected officials, and the home of many celebrities from South Korea.
Several popular shopping and entertainment areas are located in Gangnam-gu, including Apgujeong, the COEX Mall and the area around Gangnam Station, Garosugil, and Cheongdam-dong. The important business district around Teheranno (Tehran Street) runs east-west from Gangnam Station to Samseong Station and the COEX Convention & Exhibition Center-Korean World Trade Center complex.
In popular media
Several subway stations in Gangnam and nearby areas were used as filming locations for the 2012 HoIIywood film The Bourne Legacy, the fourth installment in the Bourne film series.
The 2012 international K-pop hit "Gangnam Style" by Korean Pop-Singer Psy, was inspired by this area, and is a satire of the extreme wealth and conspicuous consumption in Gangnam.
Gangnam is served by Seoul Subway Line 2, Seoul Subway Line 3, Seoul Subway Line 7, Seoul Subway Line 9, Bundang Line and the Sin Bundang Line.
- Seolleung — Hanti — Dogok — Guryong — Gaepo-dong — Daemosan — Suseo → (Songpa-gu)
- (Songpa-gu) ← Samseong — Seolleung — Yeoksam — Gangnam → (Seocho-gu)
- (Seongdong-gu) ← Apgujeong — Sinsa → (Seocho-gu) ← Maebong — Dogok — Daechi — Hangnyeoul — Daecheong — Irwon — Suseo - (Songpa-gu)
- (Gwangjin-gu) ← Cheongdam — Gangnam-gu Office — Hak-dong — Nonhyeon → (Seocho-gu)
- (Seocho-gu) ← Sinnonhyeon
Gangnam is composed of 22 dong (neighborhoods)