Shima (志摩国; -no kuni) or Shishu (志州 shishū) was a province of Japan which consisted of a peninsula in the southeastern part of modern Mie Prefecture. Part of the Tokaido, Shima bordered Ise Province, and was the smallest of the provinces.

Shima was a prosperous fishing region, and the Nara period governors of Shima were responsible for providing annual gifts of fish to the emperor. The chief town of Shima was Toba, although small Shima was often ruled by the daimyo of larger Ise during the Sengoku period.