久慈市（日语：久慈市／くじし）是位于岩手县北部，面向太平洋的一市。

Kuji(久慈市,Kuji-shi) is a city located in Iwate Prefecture, Japan. As of September 2015, the city had an estimated population of 35,141 and a population density of 56.4 persons per km². The total area was `623.50 square kilometres (240.73 sq mi).