The Senzai Wakashū (千載和歌集, "Collection of a Thousand Years"), often abbreviated as Senzaishū, is an imperial anthology of Japanese waka poetry. It was compiled in 1187 by Fujiwara no Shunzei at the behest of the Retired Emperor Go-Shirakawa, who ordered it in 1183. It consists of twenty volumes containing 1,285 poems.