Tennō (天皇) is a Japanese word for the Emperor of Japan.
Tenno may also refer to: The Japanese Emperor butterfly Sasakia charonda. Tenno, Trentino, a municipality in Italy Tennō, Akita, a town in Japan Hayden Tenno, the antiheroic protagonist of the 2008 video game Dark Sector The name given to player-controlled characters as a whole in the video game Warframe
See also Tianhuang, Chinese for the characters 天皇