Carl Allen

Carl Allen may refer to:


 * Carl Allen (cornerback) (1955–2021), American football player
 * Carl Allen (tailback) (1920–2008), American football player
 * Carl Allen (drummer) (born 1961), jazz drummer
 * Carl Ferdinand Allen (1811–1871), Danish historian
 * Carl Meredith Allen (1925–1994), American merchant marine; associated with the Philadelphia Experiment