Kidney has picked nine of the Ulster side that featured in the Heineken Cup Final defeat to Leinster just over a week ago, although he has opted against selecting any players from the continental champions after they also played in the RaboDirect PRO12 Grand Final against the Ospreys last night.
Craig Gilroy makes his first senior Ireland appearance on the right wing, with Darren Cave and Paddy Wallace taking their provincial midfield partnership on to the international stage.
Declan Fitzpatrick starts at tight-head prop, while Heineken Cup Final try scorer Dan Tuohy is named in the second row and Chris Henry packs down on the openside flank.
Ulster hooker Rory Best is named among the replacements, as are Paul Marshall and Andrew Trimble as well as club colleague Nevin Spence who missed out on a matchday squad place for the Heineken Cup Final.
Barbarians coach John Kirwan and his selectors have named an Ulster star of their own in their starting line up alongside three from Biarritz Olympique.
All Black World Cup winning prop John Afoa starts at tight head, while centre Damien Traille, hooker Benoit August and back rower Raphael Lakafia will head to Kingsholm on a real high following their side's Amlin win over Toulon at the Twickenham Stoop on May 18.
Leinster wing Isa Nacewa has been named on the Barbarians' bench as has Biarritz lock Pelu Taele.
Former Heineken Cup winner Mick O'Driscoll will skipper the Baa-baas, with four-times European king Cedric Heymans starting at full back.
Ireland: Keith Earls; Craig Gilroy, Darren Cave, Paddy Wallace, Simon Zebo; Ronan O'Gara, Conor Murray; Brett Wilkinson, Mike Sherry, Declan Fitzpatrick, Dan Tuohy, Donnacha Ryan, John Muldoon, Chris Henry, Peter O'Mahony
Replacements: Rory Best, Ronan Loughney, Donncha O'Callaghan, James Coughlan, Paul Marshall, Nevin Spence, Andrew Trimble
Barbarians: Cedric Heymans; Paul Sackey, Mike Tindall, Damien Traille, Sailosi Tagicakibau; Felipe Contepomi, Rory Lawson; Duncan Jones, Benoit August, John Afoa; Mick O'Driscoll (capt), Cornelius Van Zyl; Mamuka Gorgodze, Francois Louw, Raphael Lakafia
Replacements: Aled de Malmanche, Neemia Tialata, Pelu Taele, Akapusi Qera, Richie Rees, Stephen Donald, Isa Nacewa