Tattersalls takes place from 28-31 May. It is one of only 10 events in the world to host a qualifier for the HSBC FEI World Cup Eventing Qualifier.
"This is such a tribute to the professionalism of all those who have worked so hard to create a quality event here at Tattersalls," said George Mernagh, Managing Director of Tattersalls Ireland, "I am delighted".
Horse Sport Ireland Board Member and Chairman of Eventing Ireland John Wright said: "It is great to see this wonderful event retaining its World Cup status and once again presenting the opportunity for so many Irish eventers to ride with the best in the world."
The May Bank Holiday weekend has proven popular for the crowds that have flocked to the event over the past three years, to see the world's top horses and riders in action against the magnificent backdrop of the Tattersalls complex.
In 2008, Tattersalls Ireland International Horse Trials was voted the sixth best international event by the world's eventing riders. The Irish qualifier of the HSBC FEI World Cup was won by Ireland's own Captain Geoff Curran, riding the Minister for Defence's Irish Sport Horse, Kilkishen, a combination that went on to become members of the Irish team at the Beijing Olympics.