Fudbalski Klub Leotar Trebinje, often known more simply as Leotar, is located in the city of Trebinje and was established back in 1925. Nicknamed Tigrovi, which translates to 'The Tigers', the team have experienced a rise to prominence since the turn of the 21st century and have enjoyed significant success in domestic competitions.
Leotar spent their first few decades competing in the Yugoslav league structure, but remainded in the lower divisions and never managed to reach the country's top tier, the Yugoslav First League. As a result, they often acted as something of a feeder club to the more successful teams in the country. After the Bosnian war, the team competed in the First League of the Republika Srpska, which served as the top flight for teams in the Republika Srpska up until 2002. In 2001-02, the final year before the creation of the Premier League of Bosnia and Herzegovina, Leotar were crowned as First League champions.
Upon entering the Premier League, the club picked up where they left off and continued to enjoy success. Their first season in the division saw Leotar once again end the campaign as league champions, finishing three points ahead of their closest rivals, Zeljeznicar. As a result, they made their debut in the UEFA Champions League the following season. Unfortunately, after beating CS Grevenmacher, they were eliminated in the second qualifying round by Czech giants, Slavia Prague. Additional success has come in the form of the Republika Srpska Cup, which the team were able to win in both 2002 and 2004.
Some of the club's most notable former players include a number of Bosnia and Herzegovina internationals, such as Branislav Krunić, Semjon Milošević, Siniša Mulina and Zdravko Šaraba.
Leotar's home matches are played at the Stadion Police, or Police Stadium, which is currently able to hold up to 8,500 people.