was a town located in Usui District, Gunma Prefecture, Japan. As of 2003, the town had an estimated population of 16,556 and a density of 94.58 persons per km². The total area was 175.05 km². On March 18, 2006, Matsuida was merged into expanded city of An'naka. External links Matsuida Branch Office of City of Annaka Dissolved municipalities of Gunma Prefecture