多贺城市（日语：多贺城市／たがじょうし）是位于宫城县中部的一市。陆奥国府「多贺城」的所在地。是仙台市的住宅城市中人口仅次于名取市的第二的城，目前人口仍在增加。

Tagajō(多賀城市,Tagajō-shi) is a city located in Miyagi Prefecture, Japan. As of August 2014, the city had an estimated population of 62,329 and a population density of 3170 persons per km². The total area was 19.64 square kilometres (7.58 sq mi). The city was named after Taga Castle, the capital of Mutsu Province from the Nara period.