Surname Smith-Dorrien is a surname. Notable people with the surname include:
Horace Lockwood Smith-Dorrien (1858–1930), British Army General Olive Smith-Dorrien (1881–1951), philanthropist and wife of Horace Smith-Dorrien Thomas Smith-Dorrien-Smith (1846–1918), Lord Proprietor of the Isles of Scilly 1872–1918 Arthur Dorrien-Smith (1876–1955), Lord Proprietor of the Isles of Scilly 1918–1920 Robert Dorrien-Smith (born 1951), British businessman and politician
Places Smith-Dorrien House, a building in Aldershot, Hampshire, UK Smith-Dorrien Trail, a road in Alberta, Canada