Mac Dhomhnaill is a surname of Gaelic origin, primarily associated with the Scottish Highlands and Ireland. It translates to "son of Dhomhnall," where Dhomhnall is the Gaelic form of the name Donald. The name is linked to various clans, particularly the Clan Donald, which played a significant role in Scottish history. The Mac Dhomhnaill family has a rich heritage, often connected to the Isle of Skye and other regions in Scotland. Members of this lineage have historically been involved in local governance and military affairs, contributing to the cultural and social fabric of their communities.