Betz is a surname. Notable people with the surname include:
Albert Betz (1885–1968), physicist Anton Betz (1893–1984), German journalist and publisher Carl Betz (1921–1978), actor Claire Betz (1921–2014), part-owner of the Philadelphia Phillies Don Betz, university president Franz Betz (1835–1900), opera singer Georg Betz (1903–1945), military officer Gregor Betz (born 1948), swimmer Hans Betz (born 1931), rower Hans Dieter Betz (born 1931), scholar of religion Hans-Dieter Betz (born 1940), physicist Hans-Georg Betz, academic Jonathan Betz, journalist Matthew Betz (1881–1938), actor Pauline Betz (1919–2011), tennis player Peter Betz (1929–1991), rower Vladimir Betz (1834–1894), scientist Wim Betz (1943–2019), physician