Kunashiri (国後) was one of four Shimushu-class escort ships built for the Imperial Japanese Navy during World War II.

The ships had two diesel engines, each driving one propeller shaft, which were rated at a total of 4,200 brake horsepower (3,100 kW) for a speed of 19.7 knots (36.5 km/h; 22.7 mph).

A dozen depth charges were stowed aboard initially, but this was doubled in May 1942 when their minesweeping gear was removed.

After the end of World War II Kunashiri returned to Sasebo and was later used by the Allied Repatriation Service.

In attempts to rescue her, the Kamikaze also ran aground, while at the same time, she too was repatriating Japanese troops from Singapore.