| Sept | Clan | |
| Wallis | Wallace | |
| Walters | Forbes | |
| Wardwn | 13th & 14th Century Scottish Names of Wardwn of Webitoune, Wepownt | |
| Wass | Munro | |
| Wass | Ross | |
| Watson | Buchanan | |
| Watt | Buchanan | |
| Weaver | MacFarlane | |
| Webster | MacFarlane | |
| Whallan | Donald | From Antrim, Islay or Kintyre and must have originally been a MACQUILLAN |
| Whan | Donald | From Skye, N. Uist, Islay or Kintyre and must have originally been a MACQUEEN . |
| Whannell | Donald | From West Highlands & Islands or Ulster and must have originally been a MACWHANNEL. Whannells not of Clan Donald may be from Galloway. |
| Whannel | MacDonald | |
| Wharrie | MacQuarrie | |
| Wheelan | MacDonald | |
| White | Lamont | |
| White | MacGregor | |
| Whyte | Lamont | |
| Whyte | MacGregor | |
| Wilkie | Donald | From Islay or Kintyre and must have originally been a MACQUILKAN. Scots Wilkies not of Clan Donald may be from Lanarkshire or Midlothian. |
| Wilkie | MacDonald | |
| Wilkinson | Donald | From Islay or Kintyre. Approx. 11% of all Wilkinsons are of Scots ancestry. Scots Wilkinsons not of Clan Donald may be from Lanarkshire or Midlothian. 1 in 25 may be of Clan Donald. |
| Wilkinson | MacDonald | |
| Will | Gunn | |
| Williamson | Gunn | |
| Williamson | MacGay | |
| Wilson | Gunn | |
| Wilson | Innes | |
| Wright | Donald | From West Highlands & Islands and must have originally been a MACINTYRE. Approx. 16% of all Wrights are of Scots ancestry. Scots Wrights not of Clan Donald may be from Stirlingshire. 1 in 125 may be of Clan Donald. |
| Wright | MacIntyre | |
| Wylie | Gunn | |
| Wylie | MacFarlane | |