Li Yan or Yan Li may refer to:
Li Yan (Three Kingdoms) (李嚴; died 234), Shu military officer during the Three Kingdoms period
Emperor Wuzong of Tang (814–846), personal name Li Yan (李炎), emperor of the Tang dynasty of China
Emperor Xizong of Tang (862–888), birth name Li Yan (李儼), emperor of the Tang dynasty of China
Li Yan (Yang Wu) (李儼; died 918), politician during Tang Dynasty and Wu
Li Yan (artist) (born 1977), Chinese artist
Athena Lee Yen (李燕; born 1981), Taiwanese actress
Yan Li (author) (李彥; born 1955), Chinese-Canadian novelist
Yan Li (politician) (born 1961), Chinese politician and engineer