Cognomen Kjartan (Kjartan 
) , across the world, is a very rare surname. The surname Kjartan is habitual in Iceland, where it is quite a rare surname, Norway, where it is a rare surname, and Spain, where it is a very rare surname. Not in comparison with a country's population, the name is most common in Norway, Iceland, and China. Much more prevalently, Kjartan is the forename as well as the last name.
Bø, Björnsson, Bjarnason, Pedersen, Johansen, Einarsson, Olafsson, Ólafsson, Þórisson, Sigurðsson, Sveinsson, Kjartansson, Guðmundsson, Sigurdsson, Ragnarsson, Gunnarsson, Haraldsson, Þórðarson, Kristiansen, Gudmundsson, Johannessen, Rasmussen, Valdimarsson, Magnússon, Jónsson, Vik, Sson, Berg, Eide, Haga, Bryne, Hauge, Olsen, Madsen, Nielsen, Mundsson, Gjerde, Jensen, Nilsen, Hansen, Haugen, Høvik, Karlsen, Pálsson, Jonsson, Armann, and Kristoffersen