大田原市（日语：大田原市／おおたわらし）是栃木县东北部的一市，是栃木县北地区的政治、经济、文化、行政的中心都市。2005年10月1日，将邻接的那须郡汤津上村与同郡黑羽町编入，人口约8万人。

Ōtawara(大田原市,Ōtawara-shi) is a city located in Tochigi Prefecture, in the northern Kantō region of Japan. As of May 2015, the city had an estimated population of 75,289 and a population density of 212 persons per km². Its total area was 354.36 km². The city's name may also be spelled "Ohtawara" as indicated by the official city website.