Kwang-su, also spelled Kwang-soo or Gwang-su, is a Korean given name.

According to South Korean government data, Kwang-su was the ninth-most popular name for newborn boys in 1945.

People People with this name include:

Film and music Park Kwang-su (born 1955), South Korean film director Kim Jho Kwang-soo (born 1965), also known as Peter Kim, South Korean film director Lee Kwang-soo (born 1985), South Korean actor

Sportspeople Kim Kwang-soo (volleyball), South Korean volleyball player, represented South Korea at the 1964 Summer Olympics Jeong Gwang-su (born 1968), South Korean rower Oh Kwang-soo (born 1965), South Korean boxer Back Kwang-soo (born 1978), South Korean rugby union footballer Cha Kwang-su (born 1979), North Korean Greco-Roman wrestler

Writers Sin Kwangsu (1712–1775), late Joseon Dynasty poet Yi Gwangsu (1892–1950), Korean writer and independence activist Ma Kwang-soo (1951–2017) South Korean educator and novelist

Other Sin Gwang-su (spy) (born 1929), North Korean operative involved in abductions of Japanese citizens Kim Kwang-soo (born 1954), South Korean biologist Kwang Soo Kim (born 1960), South Korean chemist

See also List of Korean given names

References