Smirnykh (Russian: Смирных) is an urban locality (an urban-type settlement) and the administrative center of Smirnykhovsky District of Sakhalin Oblast, Russia, located in the central part of the Sakhalin Island.

[8] During the period of Japanese rule over the southern half of Sakhalin from 1905-1945, its name was Keton (気屯).

During fighting between Soviet and Japanese forces on the island during World War II, Battalion Commander Leonid Smirnykh and Sergeant Anton Buyukly were killed; the localities of Smyrnikh, Leonidovo, and Buyukly are named in their honor.

[1] As a municipal division, the urban-type settlement of Smirnykh and thirteen rural localities of Smirnykhovsky District are incorporated as Smirnykhovsky Urban Okrug.

[3] It was home to Smirnykh air base during the Cold War.