Mukhsha Ulus (Tatar: Мухша олысы, Muxşa olısı, موحشا ﯘلىسى), or Naruchat Duchy (Tatar: Наручат бәклегел, Naruçat bäklege, ناروچات بەكلئگئل; Moksha: Мурунза, Murunza; Church Slavonic: Нароучадская орда, Naruchad Horde) was a subdivision of Golden Horde in Middle Mokshaland, modern Mordovia, Penza Oblast and Tambov Oblast of Russia in 13th-15th centuries with the capital in Mukhsha. Population was mainly Mokshas, Mişär Tatars, and Burtas. In 1313–1367 years coined own money. Population was mostly agricultural. Some were cattle-breeders and craftsmen. The main territory of the ulus (district) was situated between rivers Sura and Tsna.