Óttar

 ( Norwegian Masculine Given Names ) 

• Ottar, a Swedish king who appears in Beowulf as Ohthere
• Óttar (mythology), in Norse mythology, the protégé of Freya, and the subject of the Lay of Hyndla
• The dwarf Ótr is sometimes known as Óttarr
• Ottar from Hålogaland, the Viking adventurer
• Ottir Iarla (Earl Ottir), historical Norse-Gael of Waterford and probable settler of Cork
• Jarl Ottar, earl of Götaland figuring in the Jomsvikinga Saga and in the Heimskringla
• Óttarr svarti (Óttarr the Black), an 11th-century Icelandic court poet
• Óttar of Dublin, 12th-century Norse-Gael king of Dublin

Given name

• Ottar Brox (1932–), Norwegian politician for the Socialist Left Party
• Ottar Dahl (1924–2011), Norwegian historian and historiographer
• Ottar Fjærvoll (1914–1995), Norwegian politician from the Centre Party
• Ottar Gjermundshaug (1925–1963), Norwegian skier who competed in the early 1950s
• Ottar Grønvik (1916–2008), Norwegian philologist and runology scholar
• Tor Ottar Karlsen (1950–), Norwegian politician for the Labour Party
• Ottar Landfald (1919–2009), Norwegian politician for the Centre Party

• Cotter family
• Cotter (surname)