Keiji Himeno is a male Japanese voice actor and actor born on May 17, 1966, in Tokyo. He has type B blood and a height of 170 centimeters.

Himeno is known for a range of supporting roles in anime series. One of his widely recognized performances is as Ragnarok in the 2008 series Soul Eater. Ragnarok is a demon weapon partner to the character Crona, and Himeno provides the voice for this often brash and bullying entity.

In the 2014 animated series Ronja the Robber's Daughter, produced by Polygon Pictures and directed by Goro Miyazaki, Himeno voiced the character Lill-Klippen. The series is an adaptation of Astrid Lindgren's children's fantasy novel. His filmography also includes the role of Yamaki in the 2016 anime Puzzle & Dragons X, a series based on the popular puzzle video game franchise.

Additional major voice roles include Becker Shadam in the Gundam series Reconguista in G, a part he also performed in the compilation film versions of that story. He played Mohamed in the 2004 baking-themed comedy series Yakitate!! Japan. Other television credits include the commentator in Tiger & Bunny, a sergeant in The Tatami Galaxy, and an adjutant in The World is Still Beautiful. He also appeared as Gomi World in the 2021 Super Sentai series Kikai Sentai Zenkaiger. His acting work extends to theatrical films, including roles in the compilation movies for Gundam Reconguista in G.