Hviid is a Danish surname. Notable people with the surname include:
Bent Faurschou-Hviid (1921–1944), Danish resistance fighter Carl Johan Hviid (1899–1964), Danish film actor Frederik Hviid (born 1974), Spanish swimmer Jørgen Hviid (1916–2001), Danish and Latvian multi-sport athlete, and an officer in the Royal Danish Navy Morten Hviid, academic