Cheng Yu (程昱; Chéng Yù, 141–220) was an advisor to the warlord Cao Cao during the late Han dynasty.
Cheng Yu or Chengyu may also refer to:
- Chengyu (成語), a type of idiomatic expression in the Chinese language
- Chengdu-Chongqing dialect or Cheng-Yu dialect
- Cheng Yu (musician) (程玉; Chéng Yù), Chinese pipa player based in England
- Cheng Yu (table tennis) (程瑜; Chéng Yú, born c. 1952), Chinese para table tennis player
- Winnie Yu (Chinese: 俞琤; pinyin: Yú Chēng; born 1954), Hong Kong radio personality