Eiichiro Funakoshi is a Japanese actor and voice actor born on July 21, 1960, in Yugawara, Ashigarashimo District, Kanagawa Prefecture. He graduated from the Film Department of Nihon University College of Arts. Funakoshi is affiliated with the talent agency Horipro.

As a performer, Funakoshi is primarily recognized for his extensive work in live-action television dramas, including lead roles in the long-running series Sono Otoko, Fuku Shocho. However, he has also contributed to anime and voice-over roles in various films and television specials.

His notable voice roles include Kenichi Mikuriya in the 2016 film Death Note: Light up the NEW World. In the anime genre, he voiced Toto in the 2009 film Jungle Emperor Leo, based on the classic Osamu Tezuka story. He played Daigo Inokuma in the 2005 television drama series Attack No. 1, a live-action adaptation of the sports manga. Funakoshi also provided the voice for Dr. Nambu in the 2018 anime film Infini-T Force the Movie: Farewell Friend, which features characters from classic Tatsunoko Productions series. Another significant voice role was Black Mask in the 2006 Doraemon film Doraemon: Nobita's Dinosaur 2006.

His career demonstrates a pattern of contributing to major franchise films, often in the role of a senior character or antagonist. While Funakoshi has received recognition for his acting, such as a Golden Arrow Award for his role in the television drama The Guard Man, his career achievements are centered primarily on his live-action performances rather than his anime voice work.