José Gregorio Monagas (4 May 1795 - 15 July 1858) is President of Venezuela 1851-1855 and brother of José Tadeo Monagas.

General José Gregorio Monagas was born in Aragua de Barcelona, Venezuela, in 1795.

His parents were Francisco José Monagas, a merchant from the Canary Islands, and Perfecta Burgos, a native of Cojedes.

Monagas starts his military career at an early age, in 1813, along with his brother José Tadeo.