Sơn Tây may refer to several places in Vietnam, including:
Sơn Tây, Hanoi: a ward in the former Sơn Tây town Sơn Tây, Hà Tĩnh: a commune in the former Hương Sơn district Sơn Tây, Quảng Ngãi: a commune in the former Sơn Tây district Sơn Tây Province: a former province in North Vietnam, dissolved in 1965 and became part of Hà Tây province Citadel of Sơn Tây: a fortification and provincial capital, site of the Sơn Tây campaign Sơn Tây (town): a former district-level town of Hanoi, dissolved in 2025 as part of the 2025 Vietnamese administrative reform Sơn Tây district: a former district of Quảng Ngãi province, dissolved in 2025 as part of the 2025 Vietnamese administrative reform