Kjartan is a Nordic first name.
- Kjartan Fløgstad ( b. 1944 ), Norwegian writer,
- Kjartan Sveinsson, member of the band Sigur Rós,
- Kjartan Mohr, a member of the Løgting and former mayor of Tórshavn,
- A hero of the saga Laxdœla,
- The protagonist of the book " Kjartan, the Vitländer " by Charlotte Engmann.