Quế Sơn District 桂山县
(重定向自Que Son)
Quế Sơn is a district (huyện) in Quảng Nam Province, Vietnam. During the Vietnam War, it was the site of heavy fighting, including Operation Union I & II. From 1962 to 1967, the southern side of the valley was Quảng Tín Province.
As of 2003, the district had a population of 129,190. The district covers an area of 707 km². The district capital lies at Đồng Phú.