Surname Thorhallur (Thorhallur 
) , around the globe, is a very rare cognomen. The surname Thorhallur is characteristic of Eastern Asia, particularly China, where it is an extremely rare surname. More frequently, Thorhallur is the forename as well as the last name.
Maack, Johannsson, Gunnarsson, Kristjansson, Sigurdsson, Hakonarson, Halldorsson, Tryggvason, Jakobsson, Olafsson, Eythorsson, Bjarnason, Agustsson, Sverrisson, Ingason, Einisson, Jonsson, Arnason, Skulason, Flosason, Gudmundsson, and Halfdanarson