Dieudonné Joseph Saive (1889–1973) was a Belgian small arms designer who designed several well-known firearms for Belgian armsmaker Fabrique Nationale, including the FN Model 1949 and the FN FAL (Fusil Automatique Leger or Light Automatic Rifle). He is also known for modifying several of John Browning's firearms designs, including the 1931 Baby Browning and Browning Hi-Power pistol.