Ivan Grigoryevich Istomin (Russian: Иван Григорьевич Истомин; February 7, 1917 – 1988) was a Nenets and Komi writer.
From 1938 to 1950, he taught Russian, Nenets and drawing at schools in the Yamalo-Nenets Autonomous Okrug.
From 1958 to 1965, he served as the assistant managing editor of national literature at the Tyumen Publishing House.
Later on, his poems and short stories were published in literary magazines such as Siberian Lights, Druzhba Narodov, Ural, Neva, Voyvyv kodzuv.
In 1953, Our North, Istomin's first anthology of Nenets poems, was published as a stand-alone edition.