Kenji Anan is a Japanese actor and voice actor born on February 24, 1962, in Taketa, Oita Prefecture. He is affiliated with the talent agency K-Factory. His blood type is A.

Anan's career began with a focus on stage acting. After graduating from high school, he moved to Tokyo and enrolled in the Tokyo Visual Arts Academy while also attending a training school for actors. Early in his career, he spent time in the United States before returning to Japan and working in popular theater. He later passed an audition for the studio of renowned director Yukio Ninagawa and became a member of that theater company. In his late twenties, he met playwright Koki Mitani and joined the theater group Tokyo Sunshine Boys, appearing in numerous stage productions. Following the group's disbandment in 1994, he continued to focus on work in film, television, and theater, appearing frequently in Koki Mitani's projects.

While primarily known as a stage and screen actor, Kenji Anan has also worked as a voice actor in anime. His most recognized role in animation is a supporting part in the series Legend of the Galactic Heroes.

However, he is best known to international audiences for his appearances in the live-action adaptations of the Gokusen franchise, which is the source of the characters mentioned. In the first season of the television drama Gokusen, he played the role of Hiro Wakamatsu, a member of the Oedo yakuza family. He is officially credited as Kozo Wakamatsu in the second season and the 2009 film Gokusen: The Movie, where he continued to play a version of the same character.