Haakonsson is a patronymic. Notable people with the surname include:
Haakon Haakonsson the Young (1232–1257), son of king Haakon Haakonsson of Norway Harald Haakonsson, joint Earl of Orkney 1122–1127 Knut Haakonsson (1208–1261), claimant to the Norwegian throne, and later jarl Paul Haakonsson, joint Earl of Orkney 1122–1137 Sigurd Haakonsson (c. 895–962), earl of Lade (Trøndelag) and son of Håkon Grjotgardsson Sweyn Haakonsson (died c. 1016), Norwegian earl