Sangdang District () is a non-autonomous district in Cheongju, North Chungcheong Province, South Korea. Sangdang District was re-established from a part of Sangdang District and a part of Cheongwon-gun in July 2014. The newly created Cheongwon District annexed the part of Sangdang District.
The Hungsu Child was found in the Turubong limestone cave located in Munui-myeon.
Sangdang District is divided into 5 townships (myeon) and 8 neighborhoods (dong).