The Norwegians, many of them of Viking descent, are the second-largest ethnic group in the Lordship of the Isles. King Harald's reforms in the ninth century brought many a self-styled king and sacral royalty, along with their armies, to the Western Isles after decades of Viking raids, and pursuing them resulted in Norse dominion over the Hebrides.

Both Gael and Gall rebelled, beginning a century of violence between the natives, the largely peaceful colonists, and the Norwegian royal invaders. Norse dominion was eventually crushed by a Scottish hand in 1263, with the overwhelming success at the massacre of Largs (that resulted in the extermination of a Norse army that was vastly outnumbered, cut off from their supplies, harassed by pirates, stranded by storms, etc.) that led to the power vacuum that the Lordship of the Isles was born out of.

The Norwegian population, however, whether peaceful colonist or invader, has stayed here with the other Scandinavian races that they brought with them, and their language is often heard. Their own religion is also present, with the pagan Norse gods still worshipped by the Viking community and Norwegian Catholics. Their clothing is not seen so often, but their armour and weapons, and their men, are essential parts of Gaelic armies, and their furniture with the curves and simple decoration is present everywhere.

They also hold many positions of power, although the Gaels have reclaimed a few of these in recent years (Norse Macdougalls and Macleods were either exiled traitors, vassals, or had changed their name by this time), and Norse citizens are given the same rights as Gaelic ones, as are citizens of all races (no exaggeration here, every race, language, and religion common in Europe would have been of the same status as the Gaels - no race present in the Last Gaelic Empire was seen as anything less than the others).