Speaking at the Bank of Ireland's National Enterprise Week event in Thomond Park this morning, David Merriman, Regional Manager South West, said: "We are delighted to renew what has been a very successful association with Munster Rugby.
"This announcement will extend our formal association dating back 15 years and this represents a proud relationship for our bank with this great province.
"The unique identity of Munster Rugby together with its large and loyal support base throughout Ireland provides an excellent fit for Bank of Ireland.
"We look forward to promoting Munster Rugby and our association with them through more than 70 branches in Munster, with our large customer base and in strong partnership between Munster Rugby and our staff.
"It also provides a powerful platform for Bank of Ireland to engage with the Munster Rugby public."
Commenting on the announcement, Garrett Fitzgerald, CEO of Munster Rugby, added: "Munster Rugby is pleased to have Bank of Ireland become our main sponsor from next season onwards.
"We have had a fantastic relationship with Bank of Ireland extending back to the early professional days of Munster Rugby and seeing it come full circle demonstrates the value we both see in such a partnership. We look forward to more successful days ahead."