Japonvar is a Brazilian municipality located in the north of the state of Minas Gerais. In 2007 the population was 8,232 in a total area of 376 km². It became a municipality in 1997.
Japonvar is located on BR-135 which connects Montes Claros and Januária. The elevation of the municipal seat is 700 meters. Japonvar is part of the statistical microregion of Montes Claros. Neighboring municipalities are: Lontra, São João da Ponte, Patis, Brasília de Minas, and São Francisco.
The most important economic activities are cattle raising, commerce, and subsistence agriculture. The GDP in 2005 was R$ 19,043,000. Japonvar is in the bottom tier of municipalities in the state with regard to economic and social development. It suffers from isolation, poor soils, and periodic drought. As of 2007 there were no banking agencies in the town. There was a small retail commerce serving the surrounding area of cattle and agricultural lands. In the rural area there were 646 establishments employing about 1,700 workers. Only 04 of the farms had tractors. There were 80 automobiles in all of the municipality. There were 8,700 head of cattle in 2006. The crops with a planted area of more than 100 hectares were beans, sugarcane, manioc, and corn.