The surname Scales has at least two origins:
a variant spelling of the surname Scholes
someone from the manor of Scales, Norfolk
People with the surname Scales include:
Baron Scales, a title in the Peerage of England, including a list of people named de Scales
Alfred Moore Scales (1827-1892), Governor of North Carolina and Confederate Army general during the American Civil War
Dwight Scales (born 1953), former National Football League wide receiver
George Scales (1900-1976), American baseball player and manager in the Negro Leagues
Harvey Scales, American R&B singer, songwriter, and producer
John Scales (born 1966), English former footballer
John N. Scales (born 1933 or 1934), American former Pennsylvania state senator
Junius Scales (1920–2002), a leader of the Communist Party of the United States of America
Patrick Scales (American football) (born 1988), American football player
Prunella Scales (born 1932), English actor best known for the television series Fawlty Towers
Robert H. Scales (born 1944), retired US Army major general