Haroldswick or Harold's Wick (Old Norse: Haraldsvík, 'Harald's bay'), is on Unst, Shetland Islands, Scotland, and is one of the most northerly settlements in the British Isles.

A Viking grave, attributed to Harold, has been found on the nearby Setter's Hill, overlooking the landing point.

It sits at the end of a small bay in a crescent moon shape with a hill on either side, with steep cliffs and rough waters with good mackerel fishing grounds underneath.

Lining the beach are little cottages with their only barrier against the winds from the sea being a small wall on the other side of the road.

However, Haroldswick's claim to be the northernmost settlement in the UK is surpassed by the tiny hamlet of Norwick-Skaw, situated 8 km (5.0 mi) to the north.