Samokov Valley (Bulgarian: Самоковска котловина) is situated in western Bulgaria, less than 25 km south of the outskirts of the capital Sofia.

The valley is enclosed between Rila to the south and the mountain ranges of Verila to the west, Vitosha to the northwest, Plana to the north and the Shipochanski ridge of Sredna Gora to the east.

The valley is drained by the longest river entirely in Bulgarian territory, the Iskar, and its tributaries the Palakaria (left), the Musalenska Bistritsa (right) and the Shipochanitsa (right).

From north to south in its eastern parts between the dam of the Iskar Reservoir and the Borovets saddle the valley is traversed by a 32.9 km section of the second class II-82 road Sofia–Samokov–Kostenets.

[3][4][5] Belchinski Bani is a spa resort; the local mineral springs have a total discharge of 24 L/sec and temperature of 40–41.5 °C,[6] Near Belchin is located the recently restored Tsari Mali Grad Fortress.

The oldest winter resort in Bulgaria and the largest one in the mountain range, Borovets, is situated 9 km south of Samokov.