Monte Mario is the hill that rises in the north-west area of Rome (Italy), on the right bank of the Tiber, crossed by the Via Trionfale. It occupies part of Balduina, of the territory of Municipio Roma I, of Municipio Roma XIV and a small portion of Municipio Roma XV of Rome, thus including part of the Quarters Trionfale, Della Vittoria and Primavalle.

Municipio I is an administrative subdivision of the municipality of Rome, encompassing the centre of the city.