Zhou Daguan (1266–1346) is a Chinese diplomat under Temür Khan, Emperor Chengzong of Yuan.

He is most well known for his accounts of the customs of Cambodia and the Angkor temple complexes during his visit there.

He arrives at Angkor in August 1296, and remains at the court of King Indravarman III until July 1297.

He is neither the first nor the last Chinese representative to visit the Khmer Empire.

However, his stay is notable because he later writes a detailed report on life in Angkor, The Customs of Cambodia.

His portrayal is today one of the most important sources of understanding of historical Angkor and the Khmer Empire.

Alongside descriptions of several great temples, such as the Bayon, the Baphuon, Angkor Wat, and others, the text also offers valuable information on the everyday life and the habits of the inhabitants of Angkor.