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
Political partyIndependent

John Magnier (born 10 February 1948) is an Irish business magnate. He is a leading thoroughbred stud owner and has extensive business interests outside the horse-breeding industry.

Magnier was a senator in the upper house of the Oireachtas, Seanad Éireann from 1987 to 1989. He is based at Coolmore Stud at Fethard in County Tipperary, considered one of the world's best stallion stations.