Barff is a surname. Notable people with the surname include:
Edmund Barff (1833–1882), 19th-century Member of Parliament from the West Coast, New Zealand Frederick S. Barff (1822–1886), English chemist, ecclesiastical decorator, and stained glass manufacturer Henry Ebenezer Barff (1857–1925), Australian university administrator and mathematician Jane Foss Barff (1863–1937), second woman to attain a Master of Arts from the University of Sydney Samuel Barff (1793–1880), banker and a supporter of Greek independence
See also Barff Peninsula, in Antarctica Bower–Barff process