The Mingrelian affair, or Mingrelian case (Russian: Мингрельское дело, mingrel’skoe delo; Georgian: მეგრელთა საქმე, megrelt’a sak’me), was a series of criminal cases fabricated in 1951 and 1952 in order to accuse several members of the Georgian SSR Communist Party of Mingrelian extraction of secession and collaboration with the Western powers.