The Transylvanian Military Frontier (Romanian: Granița Militară Transilvăneană; German: Siebenbürgische Militärgrenze; Hungarian: Erdélyi határőrvidék) was a territory in the Habsburg monarchy.

It was founded in 1762 from territories that had been part of the Habsburg Principality of Transylvania.

After it was abolished, the territory of the Transylvanian Military Frontier was reincorporated into the principality.

Within the Habsburg monarchy the Transylvanian Military Frontier bordered the Principality of Transylvania and the Kingdom of Hungary in the northwest, the Banatian Military Frontier in the southwest, and Bukovina (part of Galicia and Lodomeria until 1849, a separate duchy thereafter) in the northeast.

It also bordered the Ottoman vassal principalities of Wallachia and Moldavia in the southeast.