Kumiko Endou is a Japanese actress and voice actress born on April 8, 1978, in Tokyo, Japan. She began her entertainment career in 1995 after being discovered while working a part-time job. While she is active as a live-action film and television actress, Endou has also performed voice roles for several Japanese animation projects.

As a voice actress, Endou is known for the role of Reiko Katakura in the television anime series Aishiteruze Baby, which aired in 2004. Another significant voice role is that of Ryouko Kawase in the long-running sports anime series Major. In live-action cinema, she portrayed the character Hitomi Kitamura in the 2001 horror film Tomie: Re-birth, the third installment in the Tomie film series based on the manga by Junji Ito. Her performance in this film is a notable entry in her filmography.

Throughout her career, Endou has balanced work across both live-action and voice acting. In live-action television, she had a long-running role as垣内妙子 (Mysterious? reading) in the警視庁搜查一課9係 series, which later became特搜9. She has also provided voices for animated films, such as the role of Ryouko Kawase in the 2008 theatrical film Major: Yujou no Winning Shot. Her voice acting work, while not as extensive as her on-screen appearances, includes collaborations with studios such as TMS Entertainment. Her career reflects the path of a multi-talented entertainer in the Japanese industry, moving between genres and formats with roles in horror, drama, and sports animation.