Myōgi (妙義町 Myōgi-machi) was a town located in Kanra District, Gunma, Japan.
On March 27, 2006, Myōgi was merged with the city of Tomioka.
In 2003, the town had an estimated population of 4,901 and a density of 170.41 persons per km². The total area was 28.76 km².