John Byset the Elder, Lord of the Aird (died 1257) was a Scoto-Norman nobleman who is the progenitor of the Bissett family of the Glens of Antrim in medieval northeastern Ireland, present-day Northern Ireland.
John fled to Ireland and then to England, with his uncle Walter Byset, Lord of Aboyne after Walter had been complicit in the murder of Padraig, Earl of Atholl.
[2] His name has the distinction of being the ancestral element in the Gaelic style Mac Eoin (Bissett) of the Glens used by his descendants in Ireland into the 16th century.
[citation needed] He is known to have had a son John Bissett of Lovat.
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