Nacmine is a community within the Town of Drumheller, Alberta, Canada. It was previously a hamlet within the former Municipal District (MD) of Badlands No. 7 prior to the MD's amalgamation with the former City of Drumheller on January 1, 1998. Nacmine is located within the Red Deer River valley on South Dinosaur Trail (Highway 575), approximately 5 km west of Drumheller's main townsite and 112 km northeast of Calgary. The community is within Census Division No. 5 and in the federal riding of Crowfoot.