Yannai (Hebrew: יניי or ינאי‎‎) was the first payyetan to employ rhyme and introduce his name in acrostics. He flourished, probably in the land of Israel, in the first half of the 7th century. He was apparently a very prolific poet, for reference is made to "the liturgical poems of Yannai"; he is also said to have composed "ḳerobot" for the "orders of the year" (perhaps for the weekly lessons). Most of his poems are lost; some are perhaps still extant, but they cannot be recognized with certainty as Yannai's work. It is speculated that he may have composed the famous Unettaneh Tokef prayer. In 1938, Zulay published poems of Yannai collected from Geniza fragments.