Hyakunin Isshu (百人一首) is a classical Japanese anthology of one hundred Japanese waka by one hundred poets. Hyakunin isshu can be translated to "one hundred people, one poem [each]"; it can also refer to the card game of uta-garuta, which uses a deck composed of cards based on the Hyakunin Isshu.

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).