Toivo Juhonpoika Vähä (Russian: ??´??? ?´???????? ??´??, also known as Ivan Mikhailovich Petrov, Russian: ???? ?????????? ??????, 12 April 1901 – 18 June 1984) was a Finnish born Soviet colonel of the KGB.
He fled to Soviet Russia after the 1918 Finnish Civil War and made a long career in the Red Army and the Soviet Border Troops.
Vähä was one of the few Finnish exile revolutionaries who survived the Great Purge.
He is best known for his role in the 1925 capture of the British super-spy Sidney Reilly during the Operation Trust.