Kopper is a surname. Notable people with this surname include:

Andres Kõpper (born 1990), Estonian musician Eduardo Kopper (born 1965), Costa Rican skier Hilmar Kopper (1935–2021), chairman of Deutsche Bank 1989–1997 Ruy Kopper (1930–2010), Brazilian rower

See also Copper (disambiguation) Koppers (surname)