The Clan Chattan is not a Clan in the usual sense. It is a group of Highland Clans which originally acted together for mutual security whilst at the same time maintaining their independence. These include the principal Clans of
| Davidson | Farquharson |
| MacBean | MacGillivray |
| MacIntyres in Badenoch | Mackintosh |
| Maclean of Dochgarroch | MacPhail |
| Macpherson | MacQueens of Strathdearn |
| Shaw | MacThomas |