Khasan (Russian: Хаса́н) is an urban locality (an urban-type settlement) in Khasansky District of Primorsky Krai, Russia. Population: 742 (2010 Census preliminary results); 795 (2002 Census); 1,187 (1989 Census).
Khasan is the only Russian settlement on the border with North Korea. It lies near Lake Khasan and the Tumen River. The border between Russia and North Korea is formed by the course of the river, but the Tuman's riverbed sometimes changes during floods, effectively diminishing the territory of Russia and threatening to flood the settlement of Khasan and the Peschanaya border station. Since 2003, works have been in progress to reinforce the area with rocky soil for protection against the pressure of the water. There is an unobtrusive Russian outpost off to the side of the border with a fairly large radar array. Russian towns that neighbor Khasan include Kraskino, Posyet, Zarubino and Slavyanka.