Harald III (or Harold III) may refer to:
- Harald III of Denmark (1041–1080)
- Harald III of Norway (1015–1066)
- Harald III, Earl of Orkney (fl. 1190s) (Harald Eiriksson)
Famous quotes containing the word iii:
“Knavery seems to be so much a the striking feature of its inhabitants that it may not in the end be an evil that they will become aliens to this kingdom.”
—George III (1738–1820)