John Magnier

John Magnier
Born (1948-02-10) 10 February 1948
OccupationCoolmore Stud
SpouseSusan O'Brien
Children5
Senator
In office
23 April 1987 – 1 November 1989
ConstituencyNominated by the Taoiseach
Personal details
PartyIndependent

John Magnier (born 10 February 1948) is an Irish business magnate. He is a thoroughbred stud owner and has extensive business interests outside the horse-breeding industry. He is based at Coolmore Stud at Fethard in County Tipperary, considered one of the world's best stallion stations.

When Charles Haughey became Taoiseach after the 1987 election, he nominated Magnier to Seanad Éireann, the upper house of the Oireachtas; Magnier served as senator until the 1989 dissolution.