Gusev (Russian: Гу́сев), previously known by its German name Gumbinnen (Lithuanian: Gumbinė; Polish: Gąbin), is a town and the administrative center of Gusevsky District of Kaliningrad Oblast, Russia, located at the confluence of the Pissa and Krasnaya Rivers, near the border with Poland and Lithuania, east of Chernyakhovsk. Population: 28,260 (2010 Census); 28,467 (2002 Census); 27,031 (1989 Census).