Sigunga is an administrative ward in Uvinza District of Kigoma Region in Tanzania. The ward covers an area of , and has an average elevation of . In 2016 the Tanzania National Bureau of Statistics report there were 12,335 people in the ward, from 20,455 in 2012. Prior to 2014 the Herembe village was a part of Siguna Ward before it split off to form the Herembe Ward.
The ward has 2 villages and 16 hamlets.