Vaill is a surname. Notable people with the surname include:
Amanda Vaill, American writer and editor Peter Vaill, American academic Teresa Vaill (born 1962), American racewalker
See also Dudley Vaill Talcott (1899–1896), American sculptor, author and illustrator Edward W. Vaill House, historic house in New Jersey, United States Vaill., taxonomic author abbreviation of Sébastien Vaillant (1669–1722), French botanist