Changnyeong County (Changnyeong-gun 창녕군) is a county in South Gyeongsang Province, South Korea. In the early Three Kingdoms period, Changnyeong was the seat of Bihwa Gaya, a member of the Gaya confederacy which was later conquered by Silla. The Nakdong River flows through the county. The Upo wetland, an important ecological resource and tourist attraction, occupies a portion of the river basin. The county government is located in Changnyeong Town (창녕읍), the largest town and center of the county. Famous people from Changnyeong include North Korean actress Song Hye-rim.