A season-by-season record of Red Star Belgrade's league performances:
The UEFA Champions League is an annual club association football competition organised by the Union of European Football Associations (UEFA) and contested by top-division European clubs, deciding the competition winners through a round robin group stage to qualify for a double-legged knockout format, and a single leg final. It is the most-watched club competition in the world and the third most-watched football competition overall, behind only the UEFA European Championship and the FIFA World Cup. It is one of the most prestigious football tournaments in the world and the most prestigious club competition in European football, played by the national league champions of their national associations.
In European football, the UEFA coefficients are statistics based in weighted arithmetic means used for ranking and seeding teams in club and international competitions. Introduced in 1979 for men's football tournaments, and after applied in women's football and futsal, the coefficients are calculated by UEFA, who administer football within Europe, as well as Armenia, Cyprus, Israel and the Asian parts of some transcontinental countries.
The UEFA Women's Champions League, previously called the UEFA Women's Cup (2001–2009), is a European women's association football competition. It involves the top club teams from countries affiliated with the European governing body UEFA.
The 2005–06 UEFA Cup, the 35th edition of the UEFA Cup, was won by Sevilla, beating Middlesbrough in the final. It was the first victory for Sevilla in a European competition, and the first appearance by Middlesbrough in a European final. The final took place at Philips Stadion, in Eindhoven, Netherlands. The match was refereed by Herbert Fandel. Middlesbrough sealed their place in the final on the back of two dramatic comebacks. In the quarter-finals they beat FC Basel of Switzerland 4–3 on aggregate, this put them into the semi–final to face Steaua București. The first leg finished 1–0 to Steaua, and the second leg finished 4–2. Sevilla went on to defend the trophy the following year.
The 1998–99 UEFA Champions League was the 44th season of the UEFA Champions League, Europe's premier club football tournament, and the seventh since it was renamed from the "European Champion Clubs' Cup" or "European Cup". The competition was won by Manchester United, coming back from a goal down in the last two minutes of injury time to defeat Bayern Munich 2–1 in the final. Teddy Sheringham and Ole Gunnar Solskjær scored United's goals after Bayern had hit the post and the bar. They were the first English club to win Europe's premier club football tournament since 1984 and were also the first English club to reach a Champions League final since the Heysel Stadium disaster and the subsequent banning of English clubs from all UEFA competitions between 1985 and 1990. It was the first time since 1968 that Manchester United won the Champions League, giving them their second title.
Campionato Sammarinese di Calcio is an amateur league competition for football clubs located at the only level of the Sammarinese football league system and has been operating since the 1985–1986 season. Currently, Campionato Sammarinese di Calcio is ranked last at number 55 among European leagues according to UEFA's league coefficient, which is based on the performance of Sammarinese clubs in the Champions League, Europa League and the Europa Conference League.
The 2002–03 UEFA Cup was the 32nd edition of the UEFA Cup, the second-tier European club football tournament organised by UEFA. The final was played between Portuguese side Porto and Scottish side Celtic at the Estadio Olímpico de Sevilla, Seville, on 21 May 2003. Porto won 3–2 after silver goal extra time and became the first Portuguese team to win the competition.
The 2006–07 UEFA Cup was the 36th UEFA Cup, Europe's second-tier club football tournament. On 16 May 2007, at Hampden Park, Glasgow, Scotland, Sevilla won their second consecutive UEFA Cup, defeating Espanyol 3–1 on penalties after the match finished 2–2 after extra time. Sevilla became the first side to win the competition two years in a row since Real Madrid achieved this feat in 1985 and 1986.
The 2008–09 UEFA Cup was the 38th season of the UEFA Cup football tournament. The final was played at the Şükrü Saracoğlu Stadium, home ground of Fenerbahçe, in Istanbul on 20 May 2009. It was the final season to use the UEFA Cup format; starting in 2009, the competition was known as the UEFA Europa League. Ukraine's Shakhtar Donetsk beat Werder Bremen 2–1 after extra time to win their first European title. Zenit Saint Petersburg were the defending champions but were eliminated by Udinese in the Round of 16.
The 2014–15 UEFA Europa League was the 44th season of Europe's secondary club football tournament organised by UEFA, and the sixth season since it was renamed from the UEFA Cup to the UEFA Europa League.
The 2015–16 UEFA Champions League was the 61st season of Europe's premier club football tournament organised by UEFA, and the 24th season since it was renamed from the European Champion Clubs' Cup to the UEFA Champions League. Barcelona were the title holders, but were eliminated by Atlético Madrid in the quarter-finals.
The 2017–18 UEFA Champions League was the 63rd season of Europe's premier club football tournament organised by UEFA, and the 26th season since it was renamed from the European Champion Clubs' Cup to the UEFA Champions League.
The 2018–19 UEFA Champions League was the 64th season of Europe's premier club football tournament organised by UEFA, and the 27th season since it was renamed from the European Champion Clubs' Cup to the UEFA Champions League. For the first time, the video assistant referee (VAR) system was used in the competition from the round of 16 onward.
The 2019–20 UEFA Champions League was the 65th season of Europe's premier club football tournament organised by UEFA, and the 28th season since it was renamed from the European Champion Clubs' Cup to the UEFA Champions League.
The 2020–21 UEFA Europa League was the 50th season of Europe's secondary club football tournament organised by UEFA, and the 12th season since it was renamed from the UEFA Cup to the UEFA Europa League.
The 2020–21 UEFA Champions League was the 66th season of Europe's premier club football tournament organised by UEFA, and the 29th season since it was renamed from the European Champion Clubs' Cup to the UEFA Champions League.
The 2021–22 UEFA Champions League was the 67th season of Europe's premier club football tournament organised by UEFA, and the 30th season since it was renamed from the European Champion Clubs' Cup to the UEFA Champions League.
The 2023–24 UEFA Champions League is the 69th season of Europe's premier club football tournament organised by UEFA, and the 32nd season since it was renamed from the European Champion Clubs' Cup to the UEFA Champions League.
The 2022–23 UEFA Champions League was the 68th season of Europe's premier club football tournament organised by UEFA, and the 31st season since it was renamed from the European Champion Clubs' Cup to the UEFA Champions League.
The 2022–23 UEFA Europa Conference League was the second season of the UEFA Europa Conference League, Europe's tertiary club football tournament organised by UEFA.