Quảng Ngãi (Vietnamese pronunciation: [kwâŋ ŋǎjˀ]) is a coastal and mountainous province located in the South Central Coast and Central Highlands regions of Vietnam. The province borders Da Nang to the north, Gia Lai to the south, and the South China Sea to the east. It also borders the Lao provinces of Sekong and Attapeu and the Cambodian province of Ratanakiri to the west.
The province's administrative is Cẩm Thành Ward, located 130 km south of Đà Nẵng, 820 km north of Hồ Chí Minh City, and 908 km south of Hà Nội along the National Route 1. Quảng Ngãi has a 129 km coastline with a territorial sea of 11,000 km (4,200 sq mi).