Ninna (Japanese: 仁和) is the name of a historical Japanese era (nengō). It succeeded the Gangyō era and came before the Kanpyō era. The Ninna period extended from February 885 until April 889.

Reigning sovereigns

  • Emperor Kōkō (光孝天皇) — reigned during the early part of Ninna until his death in 887.
  • Emperor Uda (宇多天皇) — succeeded Kōkō and was on the throne for the remainder of the Ninna era and beyond.

Context and notes

The nengō system assigns a name to a span of years and is used to mark imperial reigns and notable events in Japanese chronology. Ninna falls within the Heian period of Japanese history. The era’s start and end dates are given according to the traditional Japanese calendar converted to the Gregorian calendar (February 885–April 889).

Further reading

For information on the system of era names and the periods adjacent to Ninna, see the linked entries above.