The Gaelic surname Mac Suibhne is a patronymic form of Suibhne and means "son of Suibhne". The personal name Suibhne means "pleasant".
Anglicised forms of Mac Suibhne include: McSeveney, McSeveny, McSween, McSweeney, McSweeny, McSwiney, Sweaney, Sween, Sweeney, Sweenie, Sweeny, Sweney, Swiney, Swinney, A lenited variant form of Mac Suibhne is Mac Shuibhne. Anglicised forms of the latter Gaelic name include: (possibly) Mawhinney, McQueen, McQueeney, McQueenie, (possibly) McWhinney, Queen, Queeney, Wheen.
One particular family that has borne the surname Mac Suibhne is Clann Suibhne. Members of this Scottish family settled in Ulster as gallowglass warriors in the Middle Ages.