Liu Yan (Chinese: 劉晏; c. 715/716 – August 12, 780), courtesy name Shi'an (Chinese: 士安), was a Chinese economist and politician during the Tang dynasty who served briefly as chancellor during the reign of Emperor Daizong – but who was more known for his reforms in the Tang salt monopoly and food transportation systems, credited with allowing the Tang economy to recover after the disastrous An Lushan Rebellion. In 780, during the reign of Emperor Daizong's son Emperor Dezong, after the chancellor Yang Yan made a series of false accusations against him, he was first demoted and then executed.