Utsunomiya (宇都宮市, Utsunomiya-shi^?) is the capital and most populous city of Tochigi Prefecture, Japan. In October 2010 the city had an estimated population of 510,416 and a population density of 1,224.49 people per square kilometer. The total area is 416.84 km². Greater Utsunomiya (宇都宮都市圏, Utsunomiya Toshi-ken^?) had a population of 888,005 in the 2000 Census. The nearby city of Oyama, Tochigi is included in Greater Tokyo, but Greater Utsunomiya is not, despite the two areas amalgamating somewhat.

Utsunomiya is approximately 100 km north of Tokyo. It is accessible by car via the Tohoku Expressway and by train via Utsunomiya Station on the Tohoku Shinkansen line. Narita International Airport is about three hours away by car or bus. The historic town of Nikkō is approximately 25 km northwest of Utsunomiya.

The Battle of Utsunomiya Castle took place between May 10–14, 1868, during the Boshin War (a park now exists on the castle grounds). The city itself was founded on April 1, 1896. In 1954–55, Utsunomiya city incorporated with Suzumenomiya town and Hiraishi, Yokokawa, Mizuhono, Kunimoto, Shiroyama, Tomiya, Toyosato, and Sugatagawa villages and the part of Shinoi village from Kawachi District and Kiyohara village from Haga District. The city added the towns of Kamikawachi and Kawachi, both from Kawachi District, on March 31, 2007, pushing the population of Utsunomiya city over 500,000.