2010 Asian Five Nations

The 2010 Asian Five Nations, known as the 2010 HSBC Asian 5 Nations due to its sponsorship by HSBC, was the third series of the Asian Five Nations, the flagship competition devised by the International Rugby Board (IRB) to develop rugby union in Asia. The top five teams took part in a round-robin competition held on five consecutive weekends between 24 April and 22 May 2010, with each match hosted by one of the participants. Four other divisions operating on a single-elimination basis also took place, with a system of promotion and relegation between the four divisions and the main tournament.

The main tournament was contested by the Arabian Gulf rugby union team, Hong Kong, Japan, Kazakhstan and South Korea. Japan maintained their unbeaten streak within the Asian Five Nations, winning the tournament for the third time in a row, with an average winning margin of over seventy points in their four games. As champions, they qualified for the 2011 Rugby World Cup in New Zealand. Kazakhstan, who placed second with two victories, qualified for the final place play-offs, where they were defeated by Uruguay. Hong Kong and the Arabian Gulf came third and fourth respectively, with two victories each, while Korea were relegated to Division One for the 2011 competition after failing to win a match.