Iosif Markovich Ratner (Russian: ????? ???????? ??????; 26 August 1901 – 20 March 1953) was a Soviet military adviser with the Soviet embassies in Republican Spain and China during the Spanish Civil War and Second Sino-Japanese War.
A veteran of the Russian Civil War and 1929 graduate of the Frunze Military Academy, he was awarded the rank of major-general in 1944.
He taught at the Voroshilov General Staff Academy as a senior instructor during and after World War II.