Tikhaya Sosna (Russian: Ти́хая Сосна́) is a river in Belgorod and Voronezh Oblasts of Russia. It is a right tributary of the Don River. It is 161 km long, with a drainage basin of 4,350 km².
The river has its sources in the eastern part of Belgorod Oblast, on the southeastern slopes of the Central Russian Upland. It flows in a northeasterly direction, and joins the Don some 15 kilometers west of the town of Liski in Voronezh Oblast.
Along the Tikhaya Sosna lies the towns of Biryuch, Alexeyevka and Ostrogozhsk.