Tenna (天和) was a Japanese era name (年号,, nengō,; lit. "year name") after Enpō and before Jōkyō. This period started in September 1681 and ended in February 1684. During this time, the emperor was Reigen-tennō (霊元天皇).
♯The Northern pretenders did not recognize the Genkō era. Gentoku was used in the Northern Court until 1332. ₪The Shōkyō era was recognized only by the Northern pretenders, not by the Southern Court. ‡ Upon reunification of the Northern and Southern Courts in 1392, Genchū was discontinued. Meitoku was used until 1394.