Ioan Grigore Bengliu (16 November 1881–26 November 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 Jilava Prison, and subsequently assassinated by members of the Iron Guard in the 1940 Jilava massacre.

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