Il-sung, also spelled Il-seong, is a Korean given name. It was the fifth-most popular name for baby boys in 1940, according to South Korean government data.
People with this name include: Ilseong of Silla (), Silla Dynasty ruler Kim Il Sung (1912–1994), North Korean leader Kazunari Okayama (born Kang Il-sung, 1978), Japanese football player Ri Il-song (born 2004), North Korean footballer
See also List of Korean given names
References