Mirsaid Sultan-Galiev (Tatar: ??????? ?????????? ??? ????????????, Mirsäyet Xäydärgäli uli Soltangäliev, pronounced [?mirsæ'jet xæ??dær?æ'li ul? s?l?t?n?æ'li?f]; Russian: ??????? ?????????????? ??????-?????? Mirsaid Khaydargalievich Sultan-Galiev; 1892–1940), also known as Mirza Sultan-Galiev, was a Tatar Bolshevik who rose to prominence in the Russian Communist Party in the early 1920s.
He was the architect of Muslim "national communism".
His views were a direct threat to the policies of the Comintern; he was imprisoned briefly in 1923 and expelled from the Communist Party.
He was rearrested in 1928 and imprisoned for six years.
He was then arrested again in 1937 and executed in 1940 during the Stalin period.