Ki no Tsurayuki was a Japanese author, poet and court noble of the Heian period. He is best known as the principal compiler of the Kokin Wakashū, also writing its Japanese Preface, and as a possible author of the Tosa Diary, although this was published anonymously. He is well known for his waka poetry and is counted as one of the Thirty-six Poetry Immortals selected by Fujiwara no Kintō; his poetry was included also in the Hyakunin Isshu. As a courtier, he served as Governor of Tosa (930–935), Vice Governor of Kaga (917–923) and Vice Governor of Mino Province (918–923).

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.