John Kerr (c.1925 – 25 April 2006) was an Irish ballad singer from Coolback, Fanad, County Donegal, Ireland.
His family ran a local shop in Coolback and his brother James was a shoe maker and cobbler.
His best-known recording is Three Leafed Shamrock which reached number 1 in the singles charts of Ireland on 1 April 1972.
His success was followed by a further number 1 song "Three leaf Shamrock", Kerr went on to record fourteen albums during his career, which continued right up to his 80th year.
He started out as a shoe repairer and built a small drapery business that served both the tourist trade and local needs.