The RFU have confirmed that within their proposal matches will be played at the biggest and best stadia in England and the Millennium Stadium in Cardiff.
WRU Group Chief Executive, Roger Lewis, said: “I am delighted the Rugby Football Union has now confirmed their bid and declared that if they are successful matches will be played here in Wales.
“I have been involved in detailed discussions with senior representatives of the RFU and the outcome will be great news for the rugby public of Wales if the bid succeeds.
“The Rugby World Cup is one of the greatest competitions on our sporting calendar and we here in Wales are proud to be associated with its success.
“I know the RFU have worked hard on their proposal and I can promise them that everyone involved in rugby in Wales would work tirelessly to ensure the competition is a massive success.
“It is a tribute to the status of the Millennium Stadium that its significance as a British sporting arena has been recognised by our involvement in this bid.”
Details of the RFU’s RWC 2015 bid will only be publicly available once they have been presented to the IRB Council at the Royal College of Physicians in Dublin on May 13.
The WRU is currently in discussion with the Welsh Assembly Government exploring what support may be available to maximise the opportunities a Welsh involvement in the 2015 Rugby World Cup would bring to the principality.
Her Majesty’s Government and the RFU have agreed a support package that will enable the RFU to bid.
Wales has played an important role in three previous Rugby World Cup competitions in 1991, 1999, 2007.
In 1999 the RWC Final was played at the Millennium Stadium between Australia and France when Wales hosted the competition.
