Geoffrey Allen

Geoffrey Allen may refer to:


 * Sir Geoffrey Allen (chemist) (1928–2023), British chemist and academic
 * G. Freeman Allen (1922–1995), author specialising in railways
 * Geoffrey Allen (bishop) (1902–1982), bishop of Derby, 1959–1969
 * Geoffrey Allen (priest) (born 1939), Archdeacon of North West Europe
 * Geoff Allen (footballer) (born 1946), English footballer for Newcastle United