2025–26 Munster Rugby season

The 2025–26 season is Munster Rugby's fifth season in the United Rugby Championship, and their 138th season of representative rugby since their foundation. Along with competing in the URC and its Irish Shield competition, the club will also participate in the 2025–26 European Rugby Champions Cup, their 32nd season of European and professional competition.

For the first time, Munster will bring a competitive in-season fixture to the 45,000 capacity Páirc Uí Chaoimh, the principal Gaelic Athletic Association stadium in Cork, with one of the two European Rugby Champions Cup home matches designated for the venue. Munster had previously played a number of high-profile 'friendly fixtures' at the venue. Munster will become the third Irish province to bring a major competitive home fixture to a larger GAA ground, Munster having played away fixtures against both Leinster at Croke Park, and Connacht at MacHale Park, in the previous season.

Munster has appointed a new head coach for the 2025-26 season, Clayton McMillan. McMillan was previously head coach of Super Rugby side, The Chiefs.