Geary, 26 is one of nine uncapped players to be selected by manager Steve Staunton as they go on their tour to USA to face Ecuador and Bolivia on 23 May in New York and then three days later in Boston respectivly.
Manager Steve Staunton said: "This is an opportunity for players to stake a claim to be in the squad when the Euro 2008 campaign resumes in the autumn. It will give me and the management team a chance to look at these players up close and it will also give them valuable international experience."
However there are no places in the Irish squad for Sheffield United trio Alan Quinn, Paddy Kenny and Stephen Quinn.
:: Full selected squad ::
|Wayne Henderson||Preston North End|
|Colin Doyle||Birmingham City|
|Stephen Kelly||Birmingham City|
|Paul McShane||West Bromwich Albion|
|Sean St Ledger||Preston North End|
|Alex Bruce||Ipswich Town|
|Derek Geary||Sheffield United|
|John O'Shea||Manchester United|
|Kevin Kilbane||Wigan Athletic|
|Stephen Ireland||Manchester City|
|Alan O'Brien||Newcastle United|
|Caleb Folan||Wigan Athletic|
|Andy Keogh||Wolverhampton W.|