Sioma is one of the sixteen (16) Districts in the Western Province of Zambia. It was declared a district by the order of the President No. 3 of 2013 and subsequently created by Statutory Instrument No. 115 of 2013 as a District from Shang’ombo District and the boundaries have been determined. Sioma district is located in the south-western part of the province and lies on the west bank of the Zambezi River. It shares boundaries with other districts namely; Sesheke in the south, Senanga in the east and Shang’ombo in the north.  Sioma also shares an international boundary with Angola in the west. The district has a total surface area of about 7,899 square kilometers (Km²).
The majority of the Sioma population is dependent on small-scale agriculture and small scale fishing for its livelihood. The major economic activities that take place in the district in order of importance is farming and timber trading.
The overall population of Sioma District as indicated in the 2022 census is estimated at 65,539, out of which 31,484 are males and 34,055 are females.