The Monte Astu massif (French: Massif du Monte Astu) is a chain of mountains in the northeast of the island of Corsica, France.

Part of the massif covering 6,159 hectares (15,220 acres) has been designated a Zone naturelle d'intérêt écologique, faunistique et floristique (ZNIEFF).

The ZNIEFF extends along the ridge from Monte Filetto (842 m) to the Rocher de Pietrapolo (1104 m).

[1] The main peaks are, The western part of the Monte Astu massif is drained to the north by the Aliso which flows into the Gulf of Saint-Florent and to the south by the Ostriconi.

The streams from the eastern sector flow either into the Bevinco (to the north) or into the Golo (to the south).