Manix Wash is a 2.5 mile long tributary stream of the Mojave River, in San Bernardino County, California. Its mouth lies at an elevation of 1,621 feet / 494 meters at its confluence with the river. Its source lies at an elevation of 1740 feet at 34°59′45″N 116°34′43″W / 34.99583°N 116.57861°W / 34.99583; -116.57861 in the Mojave Valley.

34°58′29″N 116°32′27″W / 34.97472°N 116.54083°W / 34.97472; -116.54083