Herbert W. "Burt" Kwouk, OBE (Chinese: 郭弼; born 18 July 1930) is an English actor of Chinese ancestry, known for his role as Cato (spelled "Kato" in the 1964 release: A Shot in the Dark) in the Pink Panther films, as well as for his many television appearances including his portrayal of Major Yamauchi in the British drama series Tenko and, later, as Entwistle in Last of the Summer Wine.