Ko Seong Il (hangul:고성일) (born: July 18, 1964) is a Korean voice actor.
He joined the Munhwa Broadcasting Corporation's voice acting division in 1999.
Ojamajo Doremi (Korea TV EDition, MBC)
Bikkuriman (Bumerang Fighter, Korea TV Edition, MBC)
Submarine 707 (Korea TV Edition, MBC)
Johnny Bravo (Johnny Bravo)
The Penguins of Madagascar (Kowalski)
History 50 (MBC)
Rabihem Polis (MBC)
Redmoon (MBC)
Masca (MBC)
Hotel Africa (MBC)
Hammerboy (Character Plan)
Crayon Shin Chan (Korea TV Edition, MBC)
Antz (Korea TV Edition, MBC)
MBC Voice Acting Division Ko Seong Il Blog (in Korean)
Ad Sound Ko Seong Il Blog (in Korean)
