or Belzo, a province of Red Russia in Poland, bounded by Leopold on the south, by Chelm on the north, Little Poland on the east, and Volhynia on the west. Its capital town is Beltz.

Belza, or Belza, a town of Poland, and capital of the province of the same name, seated on the confines of Upper Volhynia, among marshes, in E. Long. 25° 15'. N. Lat. 50° 5'.