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Last name Halfdan (Halfdan ) , globally, is a very rare cognomen. The cognomen Halfdan is characteristic of Denmark, where it is a rare surname, Norway, where it is a very rare surname, and Nicaragua. Much more frequently, Halfdan is the forename as well as the last name.
Skar, Kierulf, Knudsen, Reschat, Rydland, Jonsson, Nielsen, Harring, Hopstock, Falkum-Hansen, Olafssøn, Andersen, Bechmann, Bondevik, Pedersen, Justesen, Isbrand-Hald, Mortensen, Brandtzæg, Rasmussen, Bjånesøy, Bau-Madsen, Schmidt, Hussey, Alve, Bryn, Koot, Ross, Wang, Muurholm, Saxer, Bunch, Kamoy, Kristjansson, Kamøy, Rifsdal, Mahler, Kajhøj, Kuhnle, Kjetland, Rydbeck, Larsen, Jensen, Hansen, Kruse, and Dall'Agnol