Bombus medius is a species of bumblebee. It is native to Mexico and Central America. This species lives in lower montane rainforest and cloud forest. It lives in protected areas containing natural forest remnants in areas where habitat has been lost. It does not occur in surrounding regions where intensive agriculture has spread. Habitat has also been lost to logging, mining, pollution, and human settlement. Some nests have been found in overgrown areas once cleared for agricultural purposes.