Yên Thành is a rural district of NghỠAn province, in the North Central Coast region of Vietnam. As of 2019, the district had a population of 302,500. The district covers an area of . The district capital lies at Yên Thành.
Yên Thành has both mountains and plains. It is bordered by Tân Kỳ, Quỳnh Lðu and Diá» n Châu districts to the north, Diá» n Châu District to the east, Nghi Lá»Âc District to the southeast, ÃÂô Lðáng District to the south, and Tân Kỳ District to the west.
Yên Thành district has 39 administrative units, including Yên Thành commune:
Highway 7A: 18 km from Vinh Thanh My Thanh commune to Provincial Road 534 (Highway 7A connected to National Highway 1A ): 14 km from the town of Yen Thanh Son Thanh Provincial Road 538 (Highway 7A connected with National Highway 1A): 15 km from commune to commune Hop Thanh Cong Thanh.