The 2004 UEFA European Football Championship, commonly referred to as Euro 2004, was the 12th edition of the UEFA European Championship, a quadrennial football competition contested by the men's national teams of UEFA member associations. The final tournament was hosted for the first time in Portugal, from 12 June to 4 July 2004. A total of 31 matches were played in ten venues across eight cities – Aveiro, Braga, Coimbra, Guimarães, Faro/Loulé, Leiria, Lisbon, and Porto.
Group B of UEFA Euro 2004 was one of four groups in the final tournament's initial group stage. It began on 13 June and was completed on 21 June. The group consisted of defending champions France, England, Croatia and Switzerland.
Group C of UEFA Euro 2004 was one of four groups in the final tournament's initial group stage. It began on 14 June and was completed on 22 June. The group consisted of Italy, Denmark, Sweden and Bulgaria.
The knockout stage of UEFA Euro 2004 was a single-elimination tournament involving the eight teams that qualified from the group stage of the tournament. There were three rounds of matches, with each round eliminating half of the teams entering that round, culminating in the final to decide the champions. The knockout stage began with the quarter-finals on 24 June and ended with the final on 4 July 2004 at the Estádio da Luz in Lisbon. Greece won the tournament with a 1–0 victory over the host nation Portugal.
Russia have participated in twelve UEFA European Championships, the second-most among all participants of the Euro after Germany, five of which were as the Soviet Union and one of which was representing the CIS. As the Soviet Union, their best performance was becoming champions in the inaugural 1960 edition in France, while their best performance as Russia came in the 2008 tournament held in Austria and Switzerland, when they reached the semi-finals.
The UEFA Euro 2016 qualifying Group D was one of the nine groups to decide which teams would qualify for the UEFA Euro 2016 finals tournament. Group D consisted of six teams: Germany, Republic of Ireland, Poland, Scotland, Georgia, and Gibraltar, where they played against each other home-and-away in a round-robin format.
The Netherlands national football team has appeared in ten UEFA European Championship tournaments. They first participated in 1976, and won the title in 1988. With Belgium, the Netherlands co-hosted the 2000 tournament. The team did not enter the first tournament in 1960, and did not qualify in 1964, 1968, 1972, 1984, 2016.
The UEFA European Championship is the main football competition of the men's national teams governed by UEFA. Held every four years since 1960, in the even-numbered year between World Cup tournaments, it was originally called the UEFA European Nations' Cup, changing to the current name in 1968. Starting with the 1996 tournament, specific championships are often referred to in the form "UEFA Euro (year)”. Prior to entering the tournament, all teams other than the host nations compete in a qualifying process.
Greece have qualified for only four out of sixteen UEFA European Championships, but crowned themselves European champions in 2004. At Euro 2004 they beat hosts Portugal in the final, resulting in their first major tournament win.
The Denmark national football team have participated in nine UEFA European Championships, and won the tournament once. Their first tournament was Euro 1964 in which they secured fourth place. In the final of UEFA Euro 1992 in Sweden, Denmark's 2–0 victory over Germany resulted in their first major tournament title.
Portugal have participated in eight UEFA European Championship editions. Their first tournament was in 1984, and the side have advanced past the group stage in every edition they've participated in so far. Portugal have reached the semi-finals on five occasions, and reached the final as hosts in 2004, however losing to tournament underdogs Greece. They captured their first major tournament win after defeating hosts France 1–0 in the final of Euro 2016.
As the Czech Republic is considered to be the successor team of Czechoslovakia by FIFA and UEFA, they have participated in ten UEFA European Championships; three of which were as Czechoslovakia and seven of which were as the Czech Republic. As Czechoslovakia, they became European champions in 1976. As Czech Republic, they qualified for every European Championship that they have played qualifiers for, and were runners-up at Euro 1996.
As of 2021, Switzerland have appeared at five UEFA European Championships, between 1996 and 2020. They have advanced past the first round twice, reaching the last 16 in 2016 and the quarter-finals in 2020 for the first time, before being eliminated by Spain on penalties following a 1–1 draw in extra time.
The UEFA European Championship is one of the major competitive international football tournaments, first played in 1960, whose finals stage has been held every four years, with the sixteenth staging of the competition occurring in 2021.
The 2018 FIFA World Cup qualification UEFA Group H was one of the nine UEFA groups for 2018 FIFA World Cup qualification. The group consisted of six teams: Belgium, Bosnia and Herzegovina, Greece, Estonia, Cyprus, and Gibraltar.
Group B of UEFA Euro 2020 qualifying was one of the ten groups to decide which teams would qualify for the UEFA Euro 2020 finals tournament. Group B consisted of five teams: Lithuania, Luxembourg, Portugal, Serbia and Ukraine, where they played against each other home-and-away in a round-robin format.
The 2022 FIFA World Cup qualification UEFA Group A was one of the ten UEFA groups in the World Cup qualification tournament to decide which teams would qualify for the 2022 FIFA World Cup finals tournament in Qatar. Group A consisted of five teams: Azerbaijan, Luxembourg, Portugal, the Republic of Ireland and Serbia. The teams played against each other home-and-away in a round-robin format.
Group B of UEFA Euro 2024 qualifying is one of the ten groups to decide which teams will qualify for the UEFA Euro 2024 final tournament in Germany. Group B consists of five teams: France, Gibraltar, Greece, the Netherlands and the Republic of Ireland. The teams will play against each other home-and-away in a round-robin format.
Group J of UEFA Euro 2024 qualifying is one of the ten groups to decide which teams will qualify for the UEFA Euro 2024 final tournament in Germany. Group J consists of six teams: Bosnia and Herzegovina, Iceland, Liechtenstein, Luxembourg, Portugal and Slovakia. The teams will play against each other home-and-away in a round-robin format.
Portugal 
Greece 
Spain 
Russia [nb 2] 
