The Bruce campaign is a three-year military campaign by Edward Bruce, brother of the Scottish king Robert the Bruce, in Ireland.

It lasts from his landing at Larne in 1315 to his defeat and death in 1318 at the Battle of Faughart in County Louth.After his victory at the Battle of Bannockburn, Robert decides to expand his war against the English by sending an army under his younger brother Edward to invade Ireland.

Another reason for the expedition is that supporters of the exiled House of Balliol had fled to Ireland after fighting at Bannockburn and remain a dangerous threat.

These men are led by John MacDougall of Lorn, who is the cousin of John III Comyn, Lord of Badenoch, nephew of King John Balliol.

The murder of Comyn in 1306 had set off a bloody civil war for the throne of Scotland which King Robert had all but won at Bannockburn and is now attempting to finish by capturing their last remaining stronghold.

Robert is also invited by some of the native Irish to send an army to drive out the Norman settlers and in return they will crown his brother High King of Ireland.

This campaign to revive the High Kingship effectively ends with Edward's defeat and death in the Battle of Faughart in 1318.