Clan MacEwen, Clan MacEwan, or Clan Ewen, is a Highland Scottish clan recorded in the fifteenth century as Clan Ewen of Otter. Historically, there have been several unrelated MacEwen clans and septs, leading to several distinct origins for the modern surname. Each of these historical clans could be described by the name, "Clan MacEwen". The modern clan does not yet have a chief recognized by Lord Lyon King of Arms, and as such is currently considered an Armigerous clan. However, as of 2016, Clans Ewen and Ewing have elected Commanders: Sir. John McEwen, 5th Baronet of Marchmont and Bardrochat has been named Commander of Clan MacEwen, while Clan Ewing has chosen Thor Ewing; both are line to become the first Chiefs since the death of Swene McEwen, in 1493.