Located on South-Central Vietnam, Quang Ngai borders Quang Nam Province on the north, Binh Dinh Province on the south, Kon Tum Province on the west and East Sea on the east with 135km seaside.

The province is surrounded by Truong Son Mountains on one side and the East Sea on the other. As a result, the topography includes mountains, plains, seaside and offshore islands. The main rivers are Tra Khuc, Tra Bong, and Ve rivers.