Gregory Abelevich Freiman (Russian: Григорий Абелевич Фрейман; born 1926) is a Russian mathematician known for his work in additive number theory, in particular, for proving Freiman's theorem.
From 1956 he worked in Elabuga, and in 1965 he defended his Doctor of Sciences degree under the joint supervision of Alexander Gelfond, Alexey G. Postnikov, and Alexander Buchstab.
His samizdat essay It seems I am a Jew, described the discrimination against Jewish mathematicians in the Soviet Union.
He chose Israel as his new home country, leaving his son, daughter, and wife.
In Israel he became professor in Tel Aviv University, and remarried.