Duenweg is a city in Jasper County, Missouri, United States. The population was 1,495 at the 2020 census. It is located within the Township of Joplin, a minor civil division of Jasper County, and is part of the Joplin, Missouri Metropolitan Statistical Area. It is located just to the east of the City of Joplin. Interstate 44 and Interstate 49 run concurrently across the southeast corner of town, and Business Loop 44 runs through the center of town.