Arnout or Arnoud is a Dutch language masculine given name equivalent to Arnold. Notable persons with that name include:
Persons with the given name Arnout II, Count of Aarschot, 12th-century count of Aarschot, Flanders Arnout III, Count of Aarschot, 12th-century count of Aarschot, Flanders Arnout IV, 12th-century count of Aarschot, Flanders Arnoud van der Biesen (1899–1968), Dutch sailor Arnoud Boot (born 1960), Dutch economist Arnout Coninx (1548–1617), Flemish printer and bookseller Arnoud De Meyer, Belgian management academic Arnoud van Doorn (born 1966), Dutch politician Arnout Elsevier (1579–1656), Dutch painter Arnout van Eyndhouts or Arnoud de Lens ( 1510–1582), Dutch humanist philosopher and poet Arnoud van Groen (born 1983), Dutch cyclist Arnoud van Halen (1673–1732), Dutch painter Arnoud Hendriks (born 1949), Dutch figure skater Arnout de Muyser ( 1575–1599), Flemish painter Arnoud Okken (born 1982), Dutch athlete Arnoud de Pret Roose de Calesberg, Belgian businessman Arnout Schuijff (born 1967), Dutch entrepreneur
Persons with the surname Fernand Arnout (1899–1974), French weightlifter Peter Joseph Arnoudt (1811–1865), Belgian Jesuit writer
See also Arnold (given name) Arnoldus