Sosa-gu was a district of the city of Bucheon in Gyeonggi-do, South Korea. 'So' is a Chinese character that means white and 'sa' means sand. Many years ago, there were many streams in this region which is why it is named so.
The district was abolished in July 2016 as Bucheon became a unified city without any administrative districts.
Sosa-gu was divided into the following "dong"s.
- Beombak-dong (Divided in turn into Beombak-dong, Gyesu-dong and Okgil-dong)
- Simgokbon 1-dong
- Yeokgok 3-dong
- Sosabon 1 to 3 Dong
- Songnae 1 and 2 Dong