Viscount Fairfax of Emley, in the County of Tipperary, was a title in the Peerage of Ireland. It was created on 10 February 1629 for Sir Thomas Fairfax, previously Member of Parliament for Hedon. The fifth Viscount was Lord Lieutenant of the North Riding of Yorkshire. The title became extinct upon the death of the ninth Viscount in 1772, all of whose children, apart from his daughter Anne, died in infancy.