The 2007 IRB Pacific Nations Cup was a rugby union competition held between six Pacific Rim sides; Australia A, Fiji, Japan, Samoa, Tonga and the Junior All Blacks (New Zealand's second XV). This was the first year that Australia A had competed – Australia had declined the invitation to compete in the inaugural competition in 2006 because they wanted to focus on their domestic competition, but on 18 October 2006 it was announced that they would send their second XV. For this reason, the inaugural tournament was renamed the Pacific Nations Cup instead of the IRB Pacific Five Nations as it had been called in 2006.