Alexandr Innokentevich Tolmatchew, also transliterated Tolmachev (Russian: Александр Иннокентьевич Толмачёв, 21 September 1903, St. Petersburg 16 November 1979, Leningrad ) was a twentieth century Russian and Soviet botanist and phytogeographer who was a leading expert in the flora of Russia's Arctic. He is the editor of an important multi-volume set, Flora Of The Russian Arctic - A Critical Review Of The Vascular Plants Occurring In The Arctic Region Of The Former Soviet Union, edited by J. G. Packer and translated into English by G. C. D. Griffiths.