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.
The Namibia national rugby union team represents Namibia in men's international rugby union competitions nicknamed the Welwitschias, are a tier-two nation in the World Rugby tier system, and have participated in seven Rugby World Cup competitions since their first appearance in 1999. They are governed by the Namibia Rugby Union.
The Georgia national rugby union team, nicknamed The Lelos, represents Georgia in men's international rugby union. The team is administered by the Georgian Rugby Union and takes part in the annual Rugby Europe Championship and the Rugby World Cup, which takes place every four years and in which it has appeared continuously since 2003.
The Japan national rugby union team, also known as the Cherry Blossoms, the Brave Blossoms, or simply Sakura, represents Japan in men's international rugby union. Japan is traditionally the strongest rugby union power in Asia and has enjoyed and endured mixed results against non-Asian teams over the years. Rugby union in Japan is administered by the Japan Rugby Football Union (JRFU), which was founded in 1926. They compete annually in the Pacific Nations Cup (PNC) and previously in the Asia Rugby Championship (ARC). They have also participated in every Rugby World Cup (RWC) since the tournament began in 1987, and hosted the event in 2019.
The Argentina national rugby union team represents Argentina in men's international competitions, The Argentine Rugby Union. Officially nicknamed Los Pumas, they play in sky blue and white jerseys. They are ranked 5th in the world by World Rugby, making them by some distance the highest-ranked nation in the Americas.
The Italy national rugby union team represents the Italian Rugby Federation in men's international rugby union. The team is known as gli Azzurri. Savoy blue is the common colour of the national teams representing Italy, as it is the traditional colour of the royal House of Savoy which reigned over the Kingdom of Italy from 1860 to 1946.
The Romania national rugby union team represents Romania in men's international rugby union competitions. Nicknamed Stejarii, the team is long considered one of the stronger European teams outside the Six Nations. They have participated in all but one Rugby World Cup and currently compete in the first division of the European Nations Cup, which they won in 2017. Rugby union in Romania is administered by the Romanian Rugby Federation.
The Samoa national rugby union team represents the Samoa Rugby Union in men's international rugby union. They are also known as "Manu Samoa", which is thought to derive from the name of a Samoan warrior. They perform a traditional Samoan challenge called the siva tau before each game. Samoa Rugby Union were formerly members of the Pacific Islands Rugby Alliance (PIRA) along with Fiji and Tonga. They are ranked 11th in the world.
The Fiji national rugby union team represents Fiji in men's international rugby union. Fiji competed in the Pacific Tri-Nations and now competes in its successor tournament Pacific Nations Cup. Fiji also regularly plays test matches during the June and November test windows. They have beaten the major rugby playing sides of Wales, Scotland, Australia, France, Italy, Argentina and England. The only major sides Fiji are yet to beat are New Zealand, South Africa and Ireland.
The Tonga national rugby union team represents the Tonga Rugby Union in men's international rugby union. The team is nicknamed ʻIkale Tahi . Like their Polynesian neighbours, the Tongans start their matches with a traditional challenge – the Sipi Tau. They are members of the Pacific Islands Rugby Alliance (PIRA) along with Fiji and Samoa. The Ikale Tahi achieved a historic 19–14 victory over France in the 2011 Rugby World Cup, but having lost to New Zealand and Canada, were unable to achieve what would have been their first-ever presence at the quarter-finals.
The United States men's national rugby union team, nicknamed the Eagles, represents the United States of America Rugby Football Union in men's international rugby union. USA Rugby is the national governing body for the sport of rugby union in the United States, and 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 won gold at the 1920 and 1924 Summer Olympics.
The Canada men's national rugby union team represents the Canada in men's international rugby union competitions. They are overseen by Rugby Canada the governing body of rugby union in Canada.
The Uruguay national rugby union team, nicknamed Los Teros, represents the Uruguayan Rugby Union in men's international rugby union. One of the older test sides in the world, Uruguay has qualified five times for the Rugby World Cup, in 1999, 2003, 2015, 2019 and most recently 2023. As of 10 July 2023 they are ranked 17th in the world, and are ranked 2nd in the Americas region, behind rivals Argentina.
The Portugal national rugby union team, nicknamed Os Lobos, represents Portugal in men's international rugby union competitions. The team, as well as all rugby union in Portugal, is administered by the Portuguese Rugby Federation.
The 2004 mid-year rugby union tests refer to international rugby union matches that are played through June, mostly in the Southern Hemisphere.
Zimbabwe 
New Zealand 
Scotland 
Italy 
South Africa 
Namibia 
Ireland 
Fiji 
United States 
Romania 
Tonga 
