Bai Juyi (also Bo Juyi Chinese: 白居易; 772–846), courtesy name Letian (Chinese: 樂天), was a renowned Chinese poet and Tang dynasty government official. Many of his poems concern his career or observations made about everyday life, including as governor of three different provinces. 

He achieved fame as a writer of verse in a low-key, near vernacular style that was popular throughout medieval East Asia. Besides his surviving poems, several letters and essays are also extant.

Among his most famous works are the long narrative poems "Chang Hen Ge" ("Song of Everlasting Sorrow"), which tells the story of Yang Guifei, and "Pipa xing" ("Song of the Pipa").