Walter Tso Tat-Wah (15 September 1915 – 10 January 2007) was a film actor of Hong Kong, most famous for the roles he played in a number of Wuxia films in the 1950s and 1960s.

The names Cho Tat-wah and Shih Kien were synonymous to "good and evil" in the colloquial language of Hong Kong because of the roles the two actors played in those movies. Yu So-chow co-starred many of Cho's movies. The two names Cho Tat-wah and Yu So-chow symbolized a perfect couple. His well-known roles include Lung Kim-fei (龍劍飛), Leung Foon (梁寛) and Inspector Wah (華探長).

A native of Taishan, Guangdong, (Spoke Chinese Cantonese, and Chinese Taishenese) Cho began his actor career at the age of 15, and eventually starred in more than 700 movies. He was a compulsive gambler. Legend has it that he lost the Wah-tat Studio, which produced most of his movies at the time, at the gambling table. However, it is not certain whether the studio was owned by him.