The Battle of Drumnacoub (Battle of Druim na coub, Drum-ne-coub) was a Scottish clan battle involving factions of the Clan Mackay fought in the far northwest of Scotland, some time between 1427 and 1433. It took place on a hill called Carn Fada at the southern end of the Kyle of Tongue, between Ben Loyal and the village of Tongue. It was fought between members of the Clan Mackay and men of the Clan Sutherland. The battle was recorded by the 15th century chronicler, Walter Bower, in his work Scotichronicon.