The purpose of this study has been to examine the methods and arguments used to date rock art sites in Swedish Norrland. Three types of rock art are discussed, the pecked, the polished and the painted. A secondary goal was to create a revised and up-to-date compilation of all currently known rock art sites in Norrland because the last compilation was published in 2004 and many more sites have been discovered since then. This study is based on previously published literature concerning the thoughts and theories of other scholars regarding the dating of the different sites. The study shows that the methods and arguments employed to date sites are weak. In some cases authors are more or less guessing as concerns the date of a rock art site.