Keiji Fujiwara (藤原啓治, Fujiwara Keiji, October 5, 1964 – April 12, 2020) was a Japanese actor and voice actor.

His best known works are voicing Shinnosuke's father Hiroshi Nohara in the long-running anime series Crayon Shin-chan, Maes Hughes in Fullmetal Alchemist, Holland in Eureka Seven, Axel in Kingdom Hearts, Leorio in Hunter × Hunter, Shiro Fujimoto in Blue Exorcist, Shingo Shoji in Initial D, Zenzo Hattori in Gintama, and Esidisi in JoJo's Bizarre Adventure: Battle Tendency.

In the live-action field, he was most known for dubbing actor Robert Downey Jr. as Iron Man/Tony Stark.

Fujiwara founded his own talent management and production company, Air Agency, in 2006.