Kholmsk (Russian: Холмск), known until 1946 as Maoka (Japanese: 真岡), is a port town and the administrative center of Kholmsky District of Sakhalin Oblast, Russia. It is located on the southwest coast of the Sakhalin Island, on coast of the gulf of Nevelsky in the Strait of Tartary of the Sea of Japan, 83 kilometers (52 mi) west of Yuzhno-Sakhalinsk.