Ivan Ivanovich Sollertinsky (3 December 1902, Vitebsk - 11 February 1944, Novosibirsk) was a Russian polymath of the Soviet period.
His father, Ivan Ivanovich Sollertinsky, came from a family of Russian Orthodox priests and served as a presiding judge, a privy councillor and a senator.
His mother was Ekaterina Iosifovna Bobashinskaya whose family belonged to a noble szlachta branch of the House of Sas.