Emperor Junna (淳和天皇, Junna-tennō; c. 786 – 11 June 840) was the 53rd emperor of Japan, according to the traditional order of succession. Junna reigned from 823 to 833.

Junna had six empresses and imperial consorts and 13 imperial sons and daughters. His personal name (imina) was Ōtomo (大伴).

Junna is traditionally venerated at his tomb; the Imperial Household Agency designates Ōharano no Nishi no Minenoe no Misasagi (大原野西嶺上陵, Ōharano no Nishi no Minenoe Imperial Mausoleum), in Nishikyō-ku, Kyoto, as the location of Junna's mausoleum.

The years of Junna's reign are more specifically identified by more than one era name (nengō).

Kugyō (公卿) is a collective term for the very few most powerful men attached to the court of the Emperor of Japan in pre-Meiji eras.

In general, this elite group included only three to four men at a time. These were hereditary courtiers whose experience and background would have brought them to the pinnacle of a life's career. During Junna's reign, this apex of the Daijō-kan included:

Empress: Imperial Princess Shōshi/Masako (正子内親王; 810–879), Emperor Saga's daughter

Hi (Empress as posthumous honors): Imperial Princess Koshi (高志内親王; 789–809), Emperor Kanmu's daughter