| Countries: |  Fiji (2 teams)Samoa (2 teams)  Tonga (2 teams) |
| Champions: | Tautahi Gold |
| Matches: | 16 |
| Prevseason: | 2007 |
| Nextseason: | 2009 |
The IRB Pacific Rugby Cup 2008 was the third edition of the Pacific Rugby Cup competition. First held in 2006, the 2008 edition, like its predecessors, featured 6 representative rugby union football teams; 2 from each of the three Pacific rugby unions - Fiji, Samoa and Tonga.
Tautahi Gold beat Upolu Samoa 11 points to 3 in the grand final match to win the Pacific Rugby Cup for 2008, becoming the first Tongan team, and the first team outside of Samoa, to win the trophy.
The 6 participating teams were:
The teams played a single round robin (home or away) series. The two top teams in the final standings met in the grand final match, with the first ranking team awarded home advantage.
The 2008 tournament followed the completion of Fiji's Colonial Cup, Samoa's National Provincial Championship and Tonga's Provincial Championship and provided the coaches of the three national teams with a competitive player development pathway just ahead of the IRB Pacific Nations Cup 2008.
Upolu Samoa began its title defence away to 2007 beaten finalists Tau'uta Reds in Nuku'alofa on April 19, while Fiji Warriors faced Tautahi Gold in Lautoka and 2006 champions Savaii Samoa played Fiji Barbarians in Apia. Four further rounds followed on consecutive weekends before the top two ranked teams contested the Grand Final on May 24.
| width=165 | Team | width=40 | Played | width=40 | Won | width=40 | Drawn | width=40 | Lost | width=40 | For | width=40 | Against | width=40 | Point Difference | width=40 | Bonus Points | width=40 | Points |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Upolu Samoa | 5 | 4 | 0 | 1 | 90 | 49 | +41 | 1 | 17 | ||||||||||
| Tautahi Gold | 5 | 3 | 0 | 2 | 97 | 75 | +22 | 1 | 13 | ||||||||||
| Savaii Samoa | 5 | 3 | 0 | 2 | 81 | 81 | 0 | 1 | 13 | ||||||||||
| Fiji Barbarians | 5 | 2 | 0 | 3 | 72 | 90 | -18 | 2 | 10 | ||||||||||
| Tau'uta Reds | 5 | 2 | 0 | 3 | 84 | 95 | -11 | 1 | 9 | ||||||||||
| Fiji Warriors | 5 | 1 | 0 | 4 | 70 | 104 | -34 | 3 | 7 | ||||||||||
| Source: oceaniarugby.com | |||||||||||||||||||