The 2006 Heineken Cup Final was a rugby union match played at the Millennium Stadium in Cardiff, Wales, on 20 May 2006, to determine the winners of the 2005–06 Heineken Cup, European rugby's premier club competition. The match was contested by Irish province Munster and French side Biarritz. It was the 11th Heineken Cup final overall and the third final appearance for Munster (their first since 2002, when they lost 15–9 to Leicester Tigers), while Biarritz were competing in their first final. It was the second time the Millennium Stadium had hosted the Heineken Cup final, the other being in 2002, and the fourth to take place in Cardiff, including finals played at the old Cardiff Arms Park.