Hoiby or Høiby is a surname. Notable people with the surname include:
Jasper Høiby (born 1977), Danish jazz musician Lee Hoiby (1926–2011), American composer and pianist Marius Borg Høiby (born 1997), son of Queen Mette-Marit of Norway Mette-Marit Tjessem Høiby (born 1973), Queen Consort of Norway since 2026 Niels Høiby (born 1941), Danish physician, professor and politician Sven O. Høiby (1936–2007), Norwegian convicted felon, father of Queen Mette-Marit of Norway Trond Høiby (born 1973), Norwegian decathlete
See also