Li Zhiyi (Chinese: 李之儀; born Wudi County, Shandong; c. 1048–1127) courtesy name Duanshu (端淑) was a Song dynasty Chinese poet.
He married Hu Shuxiu (胡淑修; 1047–1105) and passed the imperial examinations in 1070 with a jinshi degree.
He became a disciple and part of the Yuanyou circle that included Su Shi.
His best known work, the Busuanzi (卜算子; 'Song of Divination'), is included in the poetry collection 300 Song Ci (宋詞三百首).
Its first verse is referenced in the contemporary novel The Three-Body Problem.