| 2015 IRB Pacific Nations Cup | |
|---|---|
| Tournament details | |
| Countries |  Canada Fiji Japan Samoa Tonga United States |
| Tournament format(s) | Round-robin |
| Date | 18 July - 3 August 2015 |
| Tournament statistics | |
| Teams | 6 |
| Matches played | 12 |
| Attendance | 70,785 (5,899 per match) |
| Tries scored | 53 (4.42 per match) |
| Top point scorer(s) | Kurt Morath (49) |
| Top try scorer(s) | Leone Nakarawa (4) Sonatane Takulua (4) Fetuʻu Vainikolo (4) |
| Final | |
| Champions | Fiji (2nd title) |
| Runners-up | Samoa |
The 2015 World Rugby Pacific Nations Cup was the tenth edition of the World Rugby Pacific Nations Cup (formerly known as the IRB Pacific Nations Cup), an annual international rugby union tournament. The 2015 title was contested between the Tier 2 nations of Canada, Fiji, Japan, Samoa, Tonga and the United States.
Due to the 2015 Rugby World Cup, the tournament took place in July and August with all teams having access to overseas players. Like the 2014 IRB Pacific Nations Cup, the six teams were divided into two pools, but instead of playing each team from the same pool like in 2014, each team played the three teams from the opposing pool. Following the three rounds of cross pool matches, the six teams were seeded one through to six and played in three final play-offs to determine who finishes first to sixth. The final was contested between Fiji and Samoa, who had previously drawn 30–30 during the Cross-pool matches. Fiji won the final 39–29, scoring 6 tries to claim their second title.