Herbert Tsangtse Kwouk, was a British actor. He is perhaps best known for his role as Cato in the Pink Panther films. He made appearances in many television programmes, including a portrayal of Imperial Japanese Army Major Yamauchi in the British drama series Tenko and as Entwistle in Last of the Summer Wine.

Tenko is a television drama series co-produced by the BBC and the Australian Broadcasting Corporation (ABC), which was broadcast between 1981 and 1985.