Established in 1950, East Africa has conducted seven tours between 1954 and 1982 and has played against incoming international, representative and club touring sides including twice against the British Lions; perhaps the only example of representative multinational teams playing against each other. They have also played against the Barbarians.
There is also a West Indies side, which first toured when the Caribbean Rugby Union sent a team to tour England in 1976. Their last tour was also to England in October and November 2000.
The sport's international governing body, World Rugby, organises its member unions into three tiers. All Tier 1 and 2 nations have competed in the Rugby World Cup.
Starting in 2008, in addition to the existing tier system, the IRB introduced a four-band system of classification in which unions and, by extension, teams are classified based on "their development status and record on the international stage". The new structure is:
High performance
All countries previously in Tiers 1 and 2.
Development One
These are countries earmarked for increased developmental funding and include
Targeted
Again, the IRB did not release a list of unions in this category, but named several as being in this band:
Developmental
This is the location for all remaining unions.
Other teams
Defunct national sides
Various national sides have ceased to exist for political reasons. In the case of the Soviet Union, Czechoslovakia and Yugoslavia, there is more than one successor team. In the case of Catalonia, the Spanish Civil War and Franco's crackdown put an end to it, and in the case of East and West Germany, reunification led to their amalgamation into a single German side.
Arabian Gulf* – dissolved by the end of 2010 and replaced by separate unions and national teams
CIS*
* – a combination of Kenya, Tanzania/Tanganyika and Uganda. It has not played since 1982 but the Rugby Football Union of East Africa still exists and there have been recent talks to resurrect the team
- superseded by the Zimbabwe rugby team since 1980, the year of the country's sovereignty.