Yên Bái (Hán tự: 安沛) is an agricultural-based province located in northeastern Vietnam. It shares borders with five provinces which are Lào Cai Province, Lai Châu Province, Sơn La Province, Tuyên Quang Province, and Phú Thọ Province.

• Capital city: Yên Bái
• Area (km²): 6,808
• Population: 699,900
• Average temp: 18 - 28°C
• Ethnic data: Viet/Kinh, Cao Lan, Dao, Giay, H’mong, Kho Mu, Muong, Nung, Phu La, San Chay, Tay, Thai

Districts

Yên Bái is divided into one city (thành phố) (Yên Bái), one town (thị xã) (Nghĩa Lộ) and seven districts (huyện):

• Lục Yên
• Mù Cang Trải
• Trạm Tấu
• Trấn Yên
• Văn Chấn
• Văn Yên
• Yên Bình