Maebashi, capital, Gumma ken (prefecture), Honshu, Japan. It is situated on the Tone River, at the northwestern edge of the Kantō Plain.
Maebashi, an old castle town, was called Umayabashi in the Muromachi period (1338–1573). It was the seat of the Matsudaira family during the Edo (Tokugawa) period (1603–1867). The city was largely destroyed by Allied bombing during World War II, but it recovered and grew rapidly afterward as an industrial and communications centre. It continues to produce silk yarn. Pop. (2005) 318,584; (2010) 340,291.