The 2011 Pacific Nations Cup was a rugby union tournament held between the four national sides on the Pacific Rim: Fiji, Japan, Samoa and Tonga.

Samoa was the reigning champion after they defeated Fiji in the 2010 competition at Apia Park.

Japan were crowned Champions after defeating Fiji and scoring their fourth try the last play of the final match of the tournament giving them the bonus point they needed to go with an earlier win over Tonga.

[1] Ill discipline by Fiji cost them the game and gifted the Pacific Nations Cup to Japan at the expense of Tonga.

Fiji finished the match with 12 men after conceding 2 red and 3 yellow cards, an unenviable world record.