The Men's Rugby World Cup is a rugby union tournament contested every four years between the top international teams, the winners of which are recognised as the World champions of the sport.
The Rugby Championship, formerly known as the Tri Nations Series (1996–2011), is an international rugby union competition contested annually by Argentina, Australia, New Zealand, and South Africa. These are traditionally the four highest ranked national teams in the Southern Hemisphere; the Six Nations is a similar tournament in the Northern Hemisphere.
World Rugby is the governing body for the sport of rugby union. World Rugby organises the Rugby World Cup every four years, the sport's most recognised and most profitable competition. It also organises a number of other international competitions, such as the World Rugby Sevens Series, the Rugby World Cup Sevens, the World Under 20 Championship, and the Pacific Nations Cup.
The Brazil national rugby union team, nicknamed Tupis, is controlled by the Brazilian Rugby Confederation. Brazil is one of the founding unions of CONSUR and played in the inaugural South American tournament. Brazil has not qualified for a Rugby World Cup, but participated in the first edition of rugby 7s in the Olympics. Brazil currently ranks 4th in South America and 6th in the Americas region.
The Chilean national rugby union team represents the Chilean Rugby Federation in men's international rugby union. Nicknamed Los Cóndores, they play in red and white jerseys. They are currently ranked 21st in the World Rugby Rankings, making them the third highest-ranked nation in South America.
Argentina XV, formerly known as the Jaguares, are the second national rugby union team in Argentina, after the full national side, the Pumas.
The South American Rugby Championship refers to the continental rugby union championships for South America, organized by Sudamérica Rugby. The current name of the championships is South American Six Nations, implemented in 2018. Throughout history, South American Championships have also existed for lower divisions of the rugby union championships, as well as youth and women tournaments, and editions for rugby sevens.
The El Salvador national rugby union team, nicknamed Los Torogoces, represents El Salvador in rugby union. They had their first international tournament in 2011 in Costa Rica along the other teams from Central America, winning the Silver Cup.
The 1951 South American Rugby Championship was the first edition of the two tiered competition of the leading national rugby union teams in South America.
The 1981 South American Rugby Championship was the twelfth edition of the competition of the leading national rugby union teams in South America.
The 1991 South American Rugby Championship was the 17th edition of the competition of the leading national rugby union teams in South America.
The 1993 South American Rugby Championship was the 18th edition of the competition of the leading national rugby union teams in South America.
The 1997 South American Rugby Championship was the 20th edition of the competition of the leading national rugby union teams in South America.
The 1998 South American Rugby Championship was the 21st edition of the competition of the leading national rugby union teams in South America.
The 2000 South American Rugby Championship was the 22nd edition of the competition of the leading national rugby union teams in South America.
The 2001 South American Rugby Championship was the 23rd edition of the competition of the leading national rugby union teams in South America.
The 2002 South American Rugby Championship was the 24th edition of the competition of the leading national rugby union teams in South America.
The 2003 South American Rugby Championship was the 25th edition of the competition of the leading national rugby union teams in South America.
The 2004 South American Rugby Championship was the 26th edition of the competition of the leading national rugby union teams in South America.
The 2006 South American Rugby Championship was the 28th edition of the competition of the leading national rugby union teams in South America.
Argentina 
Chile 
Paraguay 
Uruguay