The FAI has said that Ireland will play Turkey in an international friendly in the Aviva Stadium on 25 May.
The match will be preceded by the FAI Umbro Junior Cup final.
Ireland has faced Turkey 12 times in its history, recording five wins, six draws and one defeat.
Their visit will rekindle unhappy memories for the Republic, who missed out on a place at the finals of Euro 2000 after a 0-0 play-off draw in Bursa sent Turkey through on the away goals rule.
Ireland, who face Serbia in Dublin next month, are hoping to arrange further fixtures at the end of the current season with manager O'Neill planning in earnest for the start of the Euro 2016 qualifiers in September.