Four players from North County have been named in a squad of 13 which will play against Leinster at Terenure.
John Devane, Ben McBride, Ciaran Sheridan, and Luke Whelan are the representatives from the Balrothery club.
Henry Thompson from YMCA gets the skippers armband, while Leinster's Andrew Tonge will be up against his brother in the opposition ranks.
Ahmed Shah and Abdula Tariq of Phoenix are included, as well as Peter Forkin of Merrion and Killian McGrane from The Hills.
Krith Shetty of Adamstown plays, and there are two Munster boys included - Cian Egerton of Waterford and District and Luke O'Reilly of Cork Harlequins.
Southern XI U15 Squad: