Karl or Carl Beck may refer to:
Charles Beck (1798–1866), German-born American classical scholar Karl Beck (footballer) (1888–1972), Austrian footballer Karl Beck (tenor) (1814–1879), Austrian operatic tenor Karl Beck (soldier) (1911–1945), Oberst in the Wehrmacht during World War II Karl Isidor Beck (1817–1879), Austrian poet Carl Beck (1897–1963), American football player