Quảng Sơn may refer to several places in Vietnam, including:

Quảng Sơn, a commune of Lâm Đồng province Quảng Sơn, Quảng Bình, a former rural commune of Ba Đồn. Quảng Sơn, Quảng Ninh, a former rural commune of Hải Hà District. Quảng Sơn, Ninh Thuận, a former rural commune of Ninh Sơn District.