Butch Walts (born June 4, 1955) is a former professional tennis player from the United States.
During his career, Walts won 4 singles titles and 15 doubles titles. He reached the quarter finals of the 1978 US Open, beating defending champion Guillermo Vilas before losing to John McEnroe. He achieved a career-high singles ranking of world No. 32 in 1979 and a career-high doubles ranking of world No. 23 in 1984. In 1981 Walts overcame testicular cancer and had surgery and chemotherapy.