Ireland and England will play the Barbarians in May as part of their Rugby World Cup preparations.
The Barbarians will face Joe Schmidt's side on Thursday 28 May 2015 at Thomond Park in Limerick then play England at Twickenham three days later.
The Baa Baas, who mark their 125th anniversary in 2015, are expected to field in-form Munster players as well as star names against Ireland.
"It promises to be truly memorable," said IRFU president Louis Magee.
"The celebrated Barbarians brand of rugby will bring an entertaining game to Thomond Park and one which I am sure Ireland and rugby fans will look forward to seeing."
Barbarian FC President Micky Steele-Bodger said: "We are absolutely delighted to be invited back to Ireland, where we have so many friends in the game. Over the years Irish rugby folk have done the Barbarians proud, both as players and administrators.
"The prospect of playing Ireland in Limerick is something we shall look forward to tremendously and will provide a fitting start to our 2015 summer tour and 125th anniversary celebrations."