| Competition: | Campionato Sammarinese di Calcio |
| Season: | 2012–13 |
| Continentalcup1: | Champions League |
| Continentalcup1 Qualifiers: | Tre Penne |
| Continentalcup2: | Europa League |
| Continentalcup2 Qualifiers: | Libertas La Fiorita |
| League Topscorer: | Alberto Cannini Denis Iencinella (17 goals) |
| Biggest Home Win: | Libertas 6–1 Cailungo |
| Biggest Away Win: | Pennarossa 0–5 Murata[1] |
| Highest Scoring: | Virtus 4–5 Cailungo |
| Matches: | 164 |
| Total Goals: | 422 |
| Prevseason: | 2011–12 |
| Nextseason: | 2013–14 |
The 2012–13 Campionato Sammarinese di Calcio season was the twenty-eighth since its establishment. The league is the uppermost in San Marino, in which the country's top 15 amateur football clubs play. The season began on 14 September 2012 and ended with the play-off final in May 2013. Tre Penne are the defending league champions, having won their first ever Sammarinese championship last season. Tre Penne retained their title, defeating ten-man AC Libertas 5–3 on penalties in a repeat of the previous year's play-off final.[2]
Because there is no promotion or relegation in the league, the same 15 teams who competed in the league last season will compete in the league this season.[3]
The teams do not have grounds of their own due to restricted space in San Marino. Each match was randomly assigned to one of the following grounds:
The 15 clubs are split into two groups; one with eight clubs and another with seven clubs.[4]
All teams will play twice against the teams within their own group and once against the teams from the other group. This means that the clubs in the eight-club group will play 21 matches each while the clubs in the seven-club group will play 20 matches each during the regular season.
| Rank | Player | Club | Goals |
|---|---|---|---|
| 1 |  Alberto Cannini | Tre Fiori | 17 |
| Denis Iencinella | Fiorentino | 17 | |
| 3 |  Franklin | F.C. Domagnano | 11 |
| 4 |  Valentin Grigore | Cosmos | 10 |
 Marco Ugolini | San Giovanni | 10 | |
| Giorgio Mariotti | San Giovanni | 10 | |
| 7 | Andrea Moroni | Faetano | 9 |
 Adnan Rais | Murata | 9 | |
| 9 | Marco Casadei | Murata | 8 |
| Enrico Cibelli | Tre Penne | 8 | |
| Omar Tomassoni | Pennarossa | 8 | |
| Nicoló Zennaro | Libertas | 8 |
The play-off was held in a double-eliminination format. Both group winners (Libertas and Folgore) earned byes in the first and second round.
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----Cosmos is eliminated
----Murata is eliminated
----Folgore is eliminated
La Fiorita is eliminated
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