马莫纳斯（葡萄牙语：Mamonas）是巴西米纳斯吉拉斯州的一个市镇。总面积290.283平方公里，总人口6247人，人口密度21.5人/平方公里。

• 米纳斯吉拉斯州市镇列表

Mamonas is a municipality in the north of the Brazilian state of Minas Gerais. As of 2007 the population was 6,247 in a total area of 290 km². The elevation is 681 meters. It became a municipality in 1993. The postal code (CEP) is 39516-000.

Mamonas is part of the statistical microregion of Janaúba. It is connected by poor roads to the regional center of Janaúba to the south. Neighboring municipalities are: Espinosa, Monte Azul, and Gameleiras.