2010–11 Leinster Rugby season

The 2010–11 Leinster Rugby season was Leinster's tenth competing in the Celtic League, alongside which they competed in the 2010–11 Heineken Cup. The Leinster 'A' team competed in the British and Irish Cup for their second season.

Leinster reached the 2011 Celtic League Grand Final in Thomond Park, Limerick against Munster, after finishing 2nd in the league format & beating Ulster in the semi-finals, however Leinster were beaten by Munster who had won the league twice before. In the Heineken Cup, Leinster finished top of their pool which consisted of Clermont Auvergne, Racing Metro and Saracens. Leinster beat Leicester Tigers in the quarter-finals & Stade Toulousain in the semi-finals. Leinster beat Northampton Saints in the 2011 Heineken Cup Final in the Millennium Stadium in Cardiff to win the Heineken Cup for their second time. The Leinster 'A' team were beaten by the Bedford Blues in the British & Irish Cup Quarter-Finals.

Coaching and Management team
The current coaching team will change at the end of 2009–10 with Michael Cheika departing after 5 seasons. Cheika will be replaced by current Clermont backs coach Josef Schmidt. Schmidt is joining on a three-year contract and the rest of the coaching team will be announced before the end of the 2009–10 season.

Playing Squad 2010/2011
Bold indicates full international capped played.

In for 2010–11

 * Isaac Boss (from Ulster)
 * 🇦🇷 Mariano Galarza (from Universitario de La Plata)
 * Ed O'Donoghue (from Ulster)
 * Heinke van der Merwe (from Golden Lions)

Promoted from the Leinster Academy

 * Niall Moris
 * Andrew Conway
 * Brendan Macken
 * Jack McGrath
 * Eoin Sherrif
 * Paul Ryan
 * Dominic Ryan
 * Rhys Ruddock
 * Ian Madigan

Out for 2010–11

 * Malcolm O'Kelly (retiring)
 * Girvan Dempsey (retiring)
 * 🇦🇷 Mariano Galarza to Pampas XV
 * Bernard Jackman (retiring)
 * Chris Keane
 * CJ van der Linde to Cheetahs