Stanley Stephens or Stevens may refer to:
Stanley G. Stephens (geneticist) (1911–1986), British-American plant geneticist and National Academy of Sciences member Stan Stephens (1929–2021), American politician Stanley Stephens (Australian politician) (1913–1986), member of the New South Wales Legislative Assembly Stanley Stephens (cricketer) (1883–1965), Australian cricketer Stanley Smith Stevens (1906–1973), American psychologist