Annan was an imperial protectorate and the southernmost administrative division of the Tang dynasty and Wu Zhou dynasty of China from 679 to 866, located in modern-day Vietnam. An Nam, simplified to "Annam", is the Vietnamese form of the Chinese name Annan, which means "the Pacified South" or "to pacify the South", a clipped form of the full name, the "Protectorate General to Pacify the South".

Jiaozhou was an imperial Chinese province under the Han and Jin dynasties. Under the Han, the area included Liangguang and northern Vietnam but Guangdong was later separated to form the province of Guangzhou by Sun Quan following the death of Shi Xie and lasted until the creation of the Annan Protectorate in 679.