The England national under-21 football team, also known as England under-21s or England U21(s), is the national under-21 association football team of England, under the control of the Football Association. It is considered to be the feeder team for the England national football team.
The Croatia national under-21 football team represents Croatia in international football matches for players 21 or under. It is governed by the Croatian Football Federation, the governing body for football in Croatia. It is a member of UEFA in Europe and FIFA in global competitions. The team's colours reference two national symbols: the Croatian checkerboard and the country's tricolour. They are colloquially referred to as the Mladi vatreni. So far, the Mladi vatreni qualified for five UEFA European Under-21 Championships, namely in 2000, 2004, 2019, 2021 and 2023. Croatia was unable to pass the group stage until the 2021 Euro when it was eliminated in the quarter-finals, its greatest accomplishment in the European competition so far.
The Germany national under-21 football team represents the under-21s of Germany in the UEFA European Under-21 Football Championship and is controlled by the German Football Association (DFB), the governing body of football in Germany.
The Ukraine national under-21 football team is also known as Youth [football] team of Ukraine is one of junior national football teams of Ukraine for participation in under-21 international competitions. The team is managed by the Ukrainian Association of Football staff, committee of national teams. The team participates in qualifications to the Olympic competitions and the continental (UEFA) U-21 competitions.
The Spain national under-21 football team is the national under-21 football team of Spain and is controlled by the Royal Spanish Football Federation. The team, nicknamed La Rojita, competes in the biennial UEFA European Under-21 Championship.
The Italy national under-21 football team is the national under-21 football team of Italy and is controlled by the Italian Football Federation.
The Portugal national under-21 football team is the national under-21 football team of Portugal and is controlled by the Portuguese Football Federation (FPF). They are nicknamed "Esperanças."Esperança means hope, thus they are Portugal's hopes for the future.
The Scotland national under-21 football team, controlled by the Scottish Football Association, is Scotland's national under 21 football team and is considered to be a feeder team for the Scotland national football team.
The Romania national under-21 football team, also known as Romania under-21s or Romania U21(s), is considered to be the feeder team for the Romania national football team.
The Israel national under-21 football team is the national under-21 football team of Israel and is controlled by the Israel Football Association (IFA). It is considered to be the feeder team for the senior Israel national football team.
The Albania national under-21 football team is the national under-21 football team of Albania and is controlled by the Football Association of Albania. The team competes in the European Under-21 Football Championship, which is held every two years.
The Andorra national under-21 football team is the national under-21 football team of Andorra and is controlled by the Andorran Football Federation.
The Northern Ireland national under-21 football team also known as the Northern Ireland under-21s or Northern Ireland U21s, is the national under-21 football team of Northern Ireland and is controlled by the Irish Football Association. The team competes in the UEFA European Under-21 Football Championship, held every two years. To date Northern Ireland haven't yet qualified for the finals tournament.
The Turkey national Under-21 football team, also known as Turkey Under-21s or Turkey U-21s, is the Under-21 years of age team of the Turkey national football team.
The Serbia national under-19 football team is the national under-19 football team of Serbia and is controlled by the Football Association of Serbia. The team is considered the successor to the Serbia and Montenegro national under-19 football team, which in turn was the successor to the Yugoslavia national under-19 football team.
The Faroe Islands national under-21 football team are a feeder team to the Faroe Islands national football team. The Faroe Islands U21 team was first formed in 2006 and took part in UEFA European Under-21 Championship qualifying for the first time in 2007 and 2008. Before this there was no step between the U-19 team and the senior team.
The Liechtenstein national under-21 football team represents the under-21s of Liechtenstein in the UEFA U-21 Championship, and is controlled by the Liechtenstein Football Association, the governing body of football in Liechtenstein. On 5 October 2022, it was announced that this team would be dissolved for 2023 and 2024, and would return in time for the UEFA U21-Championship 2027 qualification campaign. This decision was made due to the fact that most of the higher quality players in this age category would end up playing for the senior team.
The Croatia national under-17 football team represents Croatia in international football matches for players 17 or under. It is governed by the Croatian Football Federation, the governing body for football in Croatia. It is a member of UEFA in Europe and FIFA in global competitions. The team's colours reference two national symbols: the Croatian checkerboard and the country's tricolour. They are colloquially referred to as the Mali vatreni. So far, the Mali vatreni qualified for nine UEFA European Under-17 Championships. Croatia's greatest success in the tournament was third place in 2001. The team also finished fourth in 2005. Croatia also participated in three FIFA U-17 World Cups since its independence, in 2001, 2013 and 2015, being eliminated in quarter-finals in 2015, its biggest success so far in this tournament.
The Croatia national under-19 football team represents Croatia in international football matches for players 19 or under. It is governed by the Croatian Football Federation, the governing body for football in Croatia. It is a member of UEFA in Europe and FIFA in global competitions. The team's colours reference two national symbols: the Croatian checkerboard and the country's tricolour. They are colloquially referred to as the Mladi vatreni. So far, the Mladi vatreni qualified for five UEFA European Under-19 Championships, namely in 1998, 2000, 2010, 2012 and 2016. Croatia won third place two times, namely in 1996 and 2010, its greatest success in the tournament so far.
Greece women's national under-17 football team represents Greece in international youth football competitions.
Greece 6–0 Luxembourg 
Hungary 7–0 Greece 
