|Current season, competition or edition:|
2019 Americas Rugby Championship
(reinaugurated 2016 )
|No. of teams||6|
|Country|| Argentina XV |
| Argentina XV |
|Most titles|| Argentina XV |
The Americas Rugby Championship, often informally called the Americas' Six Nations, was an annual international rugby tournament between six North and South American nations: Argentina, Brazil, Canada, Chile, the United States and Uruguay.  Originally competed by various interlocking combinations of club, second-tier national and top national sides, the current (since 2016) international tournament has the top national sides competing (though Argentina, to date, sends its second-tier team). The current format provides these top national teams with additional test matches to be counted in the World Rugby Rankings.
The original Americas Rugby Championship (organised by World Rugby) was inaugurated in 2009, when varying combinations of national, regional and development teams from North and South America competed for the title. In 2015, it was announced that from 2016, the competition would re-form under the guidance of the Americas Rugby Association and the respective unions, to provide the six national sides with additional rankings tests annually. The updated format is based on the structure of the European Six Nations Championship, coinciding with each other in February and March of each year.  Prior to this, the last competitive tournament to be held across the Sudamérica–RAN region had been the PARA Pan American Championship, which had ceased after its 2003 edition. World Rugby has granted all matches with test match status, with caps awarded for every match, though matches against the Argentina XV (rather than the top Argentina national squad) will not affect the World Rugby Rankings. 
Originally formed in 2009 by World Rugby (then known as the International Rugby Board) to replace the North America 4 Series, was created to give the newly formed Canadian regions more competitive matches against strong opposition from the second teams of the United States and Argentina. The winner of the inaugural Canadian Rugby Championship, BC Bears, went on to compete on the international stage, playing the winner of the international semi-final match between USA Select XV and Argentina Jaguars. The Argentina Jaguars defeated the BC Bears 35–11 in the final to capture the tournament's first title. 
In 2010, the tournament was cut from 6 to 4 teams, scrapping the Canadian Division part of the tournament to create a solely international based tournament for development sides. The USA Select XV and Argentina Jaguars were joined by the second team from Tonga, and a Canada Selects side made up of the top players in the 2010 CRC season.  Each team played each other once in a round-robin format, gaining 4 points for a win, with the team on the most points at the end winning the title. 
The tournament returned in 2012, having not taken place in 2011 due to the 2011 Rugby World Cup. The tournament kept the same format as 2010, however the national side of Uruguay joined the tournament replacing Tonga A, though in 2014, Uruguay sent their second team Charrúas XV. Argentina Jaguars went on to win every tournament between 2012 and 2014.
The tournament was not held in 2015 because of the 2015 Rugby World Cup. In 2016, the tournament was relaunched and expanded to six teams with the inclusion of Brazil and Chile. Unlike the previous single-site tournament featuring lesser sides, the new tournament will be held in February and March, concurrently with the European Six Nations Championship. Like the European championship, teams will play both home and away, whereas players from European clubs will be available. 
A second competition, the Americas Rugby Challenge or ARCh was confirmed in August 2018, to be played in August and September. The inaugural competition took place at the Estadio Cincuentenario in Medellín, Colombia from August 24 to September 01. 
The new competition brought together Rugby Americas North (RAN) and Sudamérica Rugby, following the example of the Americas Rugby Championship, The Americas Rugby Challenge is officially the ‘B’ competition for the ARC.
As with the Americas Rugby Championship, the new Americas Rugby Challenge saw all competing countries playing against each other. The first edition of the competition was a Four Nations tournament with Rugby Americas North and Sudamérica Rugby both having two representatives each. 
The host nation of Colombia were joined by Sudamérica Rugby rivals Paraguay. Guyana and Mexico represented Rugby Americas North. 
Played annually, the format of the Championship is simple: each team plays every other team once in a round-robin format, making for a total of 15 matches played across the tournament. For each win, a team picks up 4 points and 2 for a draw. The team with the most points at the end wins the title. Unlike previous ARC, overseas based players are available for selection, while Argentina will mainly only select provincial and domestic players that are not part of their Super Rugby Jaguares side.
|2020||Cancelled due to COVID-19 pandemic|
Updated to after the 2019 edition
|2009||Fletcher's Fields||Markham, Ontario, Canada||Argentina Jaguars||35–11||BC Bears|
|2010||Estadio Olímpico Chateau Carreras||Córdoba, Argentina||Argentina Jaguars||Round Robin||Canada A|
|2012||Westhills Stadium||Langford, British Columbia, Canada||Argentina Jaguars||Round Robin||Canada A|
|2013||Westhills Stadium||Langford, British Columbia, Canada||Argentina Jaguars||Round Robin||USA Selects|
|2014||Westhills Stadium||Langford, British Columbia, Canada||Argentina Jaguars||Round Robin||USA Selects|
|2016||Various (3/2 home games, 2/3 away games)||Argentina Jaguars||Round Robin||United States|
|2017||Various (3/2 home games, 2/3 away games)||United States||Round Robin||Argentina Jaguars|
|2018||Various (3/2 home games, 2/3 away games)||United States||Round Robin||Argentina Jaguars|
|2019||Various (3/2 home games, 2/3 away games)||Argentina Jaguars||Round Robin||Uruguay|
|2020||Cancelled due to COVID-19 pandemic|
|Argentina XV (Jaguars)||9||34||31||2||1||Champions: (7) 2009, 2010, 2012, 2013, 2014, 2016, 2019|
|United States||4||20||14||2||4||Champions: 2017, 2018|
|Canada||4||20||7||13||3rd place: 2016|
|Brazil||4||20||6||14||4th place: 2017, 2019|
|Chile||4||20||1||19||6th place: 2016, 2017, 2018, 2019|
|USA Selects||5||14||4||10||Runner-up: 2013, 2014|
|Canada A (Selects)||4||12||6||6||Runner-up: 2010 & 2012|
|Tonga A||1||3||0||3||4th place: 2010|
|BC Bears||1||5||4||1||Runner-up: 2009|
|Ontario Blues||1||5||2||3||3rd place: 2009|
|Prairie Wolf Pack||1||3||1||2||6th place: 2009|
|The Rock||1||3||1||2||5th place: 2009|
Updated to after 2019 Americas Rugby Championship
Updated to after 2019 Americas Rugby Championship
The United States men's national rugby union team represents the United States in men's international rugby union. Nicknamed the Eagles, it is controlled by USA Rugby, the national governing body for the sport of rugby union in the United States. USA Rugby is a member of Rugby Americas North, one of six regional governing bodies under World Rugby. Until rugby returned to Olympic competition, with sevens at the 2016 Rio Games, the United States was the reigning Olympic rugby champion, having defeated the one other competitor in 1920 and the two other competitors at the 1924 Summer Olympics.
The World Rugby Pacific Challenge, formerly the IRB Pacific Rugby Cup, is an annual rugby union football tournament held in Oceania since 2006. It is contested by national 'A' teams from the Asia-Pacific region. The tournament is run by World Rugby through Oceania Rugby.
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The Nations Cup is a rugby union competition that was first held in 2006 at Estádio Universitário in Lisbon with Argentina A, Italy A, Portugal and Russia taking part. The tournament is part of the International Rugby Board's US $50 million Strategic Investment programme, which also includes the Pacific Nations Cup, the Pacific Rugby Cup and the Americas Rugby Championship.
The South American XV is a rugby union team made up from the national rugby sides in the Sudamérica Rugby rugby federation.
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South American Rugby Championship refers to the continental rugby 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.
Sudamérica Rugby, is the governing body for rugby union within South America and most of Central America. It was created on 14 October 1988 in Asunción on the initiative of Argentina, Brazil, Chile, Paraguay, and Uruguay, counting with a total of 16 unions.
The Canadian Rugby Championship (CRC) was a Canadian amateur rugby union competition, partially funded by the World Rugby. It was the highest level of men's domestic rugby in Canada. Four representative teams from regions across Canada competed for the MacTier Cup. The CRC was started in 2009 by Rugby Canada and was held annually from August to September. Rugby Canada also held CRC tournaments for under-19 men, under-20 women, and senior women.
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The 2017 Americas Rugby Championship was the second series of the Americas Rugby Championship, which is the top elite tournament for the Americas nations. It was contested by Argentina XV, Canada, United States, Uruguay, Brazil, and Chile. All matches were full international test matches with caps awarded, except those involving Argentina XV.
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The 2018 Americas Rugby Championship was the third series of the Americas Rugby Championship, which is the top elite tournament for the Americas nations. It was contested by Argentina XV, Canada, United States, Uruguay, Brazil, and Chile. All matches were full international test matches with caps awarded, except those involving Argentina XV.
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The Americas Pacific Challenge (APC) is a rugby union tournament funded by World Rugby that serves as a development competition for Americas and Pacific island nations. It provides a way to prepare players for participation with their senior national men's teams during international tests and in the Rugby World Cup qualification cycle.
The Superliga Americana de Rugby is a professional rugby union competition and the top-level championship for many countries in South America. In the 2020 season it will be contested by five teams with a team each from; Argentina, Brazil, Chile, Paraguay, and Uruguay with a future team from Colombia joining in 2021 after playing an exhibition series against the 5th-placed team at the end of the season later in May 2020. Officially sanctioned by Sudamérica Rugby, which is consequently part of World Rugby, the league was officially launched in November 29, 2019.
The 2018 World Rugby Americas Pacific Challenge was the third tournament of the Americas Pacific Challenge, which is a development competition for the Americas and Pacific island nations. The competition was hosted by Uruguay with all games played at the 14,000 capacity stadium Estadio Charrúa in Montevideo. Samoa A won the tournament for the first time, winning all three of their matches.
The 2021 Súper Liga Americana de Rugby season was the second season of Súper Liga Americana de Rugby, an annual rugby union competition sanctioned by Sudamérica Rugby. The competition began on 16 March and ended on 15 May.