The 2011 Asian Five Nations, known as the 2011 HSBC Asian 5 Nations due to the tournament's sponsorship by the HSBC, was the 4th series of the Asian Five Nationsrugby union tournament.
The 2011 Asian 5 nations consisted of the best 5 teams in Asia; Hong Kong, Japan, Kazakhstan, Sri Lanka and the United Arab Emirates.
Sri Lanka qualified for the 2011 edition of the tournament by winning Division One of the 2010 tournament against Singapore 23–16. The United Arab Emirates also qualify with the disbanding of the Arabian Gulf rugby team, this is the first time both these teams have appeared in the top five.
Changes from 2010
South Korea has been replaced with Sri Lanka, who earns promotion from Division 1.