Ioan Grigore Bengliu (November 16, 1881–November 26, 1940) was a Romanian lieutenant-general. He was born in Târgu Jiu, Gorj County, in the Oltenia region of Romania. From 1938 to 1940, he was Inspector-General of the Romanian Gendarmerie. After retiring, he was arrested by the Ion Antonescu-Horia Sima government, imprisoned at the Jilava prison, and subsequently assassinated by members of the Iron Guard in the 1940 Jilava massacre.