Soltaniyeh County (Persian: شهرستان سلطانیه) is located in Zanjan province, Iran. The capital of the county is Soltaniyeh. At the 2006 census, the county's population as a part of Abhar County was 28,266, in 7,282 families. It was separated from Abhar County. There is a large cave called Katale Khor near the capital city.