Kargasok (Russian: Каргасок) is a rural locality (a selo) and the administrative center of Kargasoksky District of Tomsk Oblast, Russia, located on the left bank of the Ob River, 460 kilometers (290 mi) from Tomsk, the administrative center of the oblast. Population: 8,127 (2010 Census); 8,547 (2002 Census); 8,450 (1989 Census).