The Kokin Wakashū , commonly abbreviated as Kokinshū (古今集), is an early anthology of the waka form of Japanese poetry, dating from the Heian period. An imperial anthology, it was conceived by Emperor Uda and published by order of his son Emperor Daigo in about 905. Its finished form dates to c. 920, though according to several historical accounts the last poem was added to the collection in 914.
Section of the earliest extant complete manuscript of the Kokinshū (Gen'ei edition, National Treasure); early twelfth century; at the Tokyo National Museum
Waka is a type of poetry in classical Japanese literature. Although waka in modern Japanese is written as 和歌, in the past it was also written as 倭歌, and a variant name is yamato-uta (大和歌).
The Kokin Wakashū is an early (c. 900) anthology of waka poetry which fixed the form of Japanese poetry.