Campionato Sammarinese
Campionato Sammarinese di Calcio is the highest competition for football clubs located at the only level of the Sammarinese football league system and has been operating since the 1985–1986 season. As of 2025, Campionato Sammarinese di Calcio is ranked last among European leagues according to UEFA's league coefficient, which was based on the performance of Sammarinese clubs in the Champions League, Europa League and the Conference League.
Rules
Until 1996, the league had two levels, Serie A1 and Serie A2, and a relegation/promotion system. However, the teams promoted from the second level could also participate in the championship play-off against Serie A1's first teams. All the clubs play at the same level since then. Before 2018–2019 season, they were split into two divisions called Girone. The teams played home and away matches in their girone and once against the teams from the other girone. The first three teams in each girone entered a double-elimination play-off tournament, which was the only seen in association football world, to decide the championship winners, who qualified for the UEFA Champions League preliminary phase.In the 2018–2019 season, the rules changed. All the clubs were still split into two girone. The teams played once against the other teams in the same girone. The top four teams in each girone proceeded to group 1 in the second stage, while the others proceeded to group 2. Teams played twice against each team in the same group. The second and the third team in group 2 proceeded to the play-off. The winner of the play-off, the top team in group 2 and the top 6 teams in group 1 proceeded to the final stage. The championship winner qualified for the UEFA Champions League preliminary phase and the first runner-up qualified for the Europa League preliminary phase.
In the 2020–2021 season, a new format was applied. Now, all the teams play in the same league and play each other twice. At the end of the regular season, the top twelve teams proceed to the play-off tournament, deciding the winner who qualifies for the UEFA Champions League preliminary phase, and the loser of the final for the Conference League preliminary phase.
In the 2023-24 season, the double-round robin format remained, but the play-offs and final were discontinued for the first time in the competition’s history. This time round, the team top of the table after every team has played each other twice, are awarded the title thus keeping in line with the majority of most European leagues.
The domestic cup winners qualify for the Conference League preliminary phase.
Stadiums
Sammarinese teams do not have home grounds of their own. Instead, the following venues are randomly chosen for every match:| Stadium | Capacity | City |
| San Marino Stadium | 6,664 | Serravalle |
| Stadio di Dogana Ezio Conti | 1,200 | Dogana |
| Stadio di Acquaviva | 500 | Acquaviva |
| Stadio di Fiorentino | 700/1000 | Fiorentino |
| Stadio di Montecchio | 600 | San Marino |
| Campo Sportivo di Domagnano | 500 | Domagnano |
| Campo Sportivo di Montegiardino | 500 | Montegiardino |
| Stadio Serravalle B | 500 | Serravalle |
Since there are not many grounds, matches are played on two days of each week, usually Saturday and Sunday. The play-off finals and the European fixtures are always played in the Stadio Olimpico.
Teams
There are 16 teams in championship.| Team | City |
| Cailungo | |
| Serravalle | |
| Domagnano | |
| Faetano | |
| Fiorentino | |
| Falciano | |
| Serravalle | |
| Montegiardino | |
| Borgo Maggiore | |
| Murata | |
| Chiesanuova | |
| San Giovanni sotto le Penne | |
| San Marino | |
| Fiorentino | |
| San Marino | |
| Acquaviva |
Champions
Winners by season
The 2019–20 season was abandoned due to the COVID-19 pandemic. Tre Fiori, with the highest points obtained before the suspension, was crowned champions and qualified for the UEFA Champions League.Titles by team
Top scorers
;Most time goalscorers:- 4 times:
- *Imre Badalassi
- 30 goals.
- *Imre Badalassi