Yen Cheng-kuo
- Birthday: 1974-10-10
- Deathday: 2025-10-07
- Place of birth: Keelung, Taiwan
- Also know as: 顏正國
Yen Cheng-kuo (Chinese: 顏正國; born October 10, 1974) is a Taiwanese actor. He appeared in nearly 30 movies throughout his childhood, mostly in dramatic roles, standing out in The Boys From Fengkuei, Ah Fei and Growing Up (1983) before the success of the "Kung Fu Kids" film series.
