- Country: Hong Kong
- Genres: Action, Comedy, Crime
- Release: 1990-12-22
- Director: Ricky Lau (I)
- Writers: Lai Ling Cheung , Wing Keung Lo
- Language: Cantonese | Mandarin
- Stars: Alfred Cheung Kin-Ting , Moon Lee , Anthony Chan Yau , Chin Siu-Ho , Cho Wing , Isabelle Chow Wang , Yue Fong , Wai-Jan Koo , Kau Lam (1923–2009) , Billy Lau
- Runtime: 93 min
- Awards: N/A
- AKA: The Nocturnal Demon , Demon Intruder , Ye mo xian sheng (Hong Kong) , Ye mo xian sheng , The Nocturnal Demon (United States of America) , Yeh moh sin sang , Ye mo sin sang (Hong Kong) , The Nocturnal Demon (United Kingdom) , The Nocturnal Demon (Hong Kong)
- Plot: Tin bears an uncanny resemblance to a psychotic serial killer, and now the cops are chasing the wrong man. He and his cousin Wawa must catch the killer on their own to prove their innocence.
- IMDB:tt0100980
The Nocturnal Demon Cast · · · ALL
Ricky Lau
(I)
Director
Alfred Cheung Kin-Ting
Chau Wai Tin
Kau Lam
(1923–2009)
Uncle Chai
Billy Lau
Master Snake
Isabelle Chow Wang
Yee Tee
Teddy Yip Wing-Cho
Officer Yip
Cho Wing
Taxi Driver
Anthony Chan Yau
Officer Chan
Richard Ng
Taxi driver
Corey Yuen
Mr Yuen
Yuen Wah
Robber
Mang Hoi
Delivering uniforms
Chin Siu-Ho
Policeman
Barry Wong
Cook
James Tien Chuen