Karkın is a village in Turhal District, in Tokat Province, Türkiye. Karkın lies at 1,112 m above sea level, in the Sakarat Dağı mountains. It has 140 inhabitants. The nearest city is Erbaa, 25 km to the northeast. Among the landmarks around are Comana Pontica (32 km). Among the natural features are Ballıca Cave (37 km).

Also written Kargın.