Petrohan Pass (Bulgarian: Петрохански проход, Petrohanski prohod) is a mountain pass in the Balkan Mountains (Stara Planina) in Bulgaria. It connects Sofia and Montana. The pass is part of Pan-European Corridor IV. As the pass represents the shortest route between Sofia and north-western Bulgaria (and from there Romania, especially since the opening of the Vidin–Calafat Bridge) the expansion of the narrow road passing through the pass has been suggested, including by the construction of a tunnel.

Petrohan Pass
Elevation	1,444 m (4,738 ft)
Traversed by	Road
Location	Bulgaria
Range	Balkan Mountains
Coordinates	43°7′21″N 23°7′31″E / 43.12250°N 23.12528°E / 43.12250; 23.12528