根室振興局
is a town located in Nemuro Subprefecture, Hokkaido, Japan. As of April 30, 2017, the town has an estimated population of 15,179, and an area of 1,320.15 km² (second largest in Hokkaido). The town is primarily agricultural, with numerous dairy farms. It comprises a part of the agricultural region referred to as "Milk Land Hokkaido".