Società Polisportiva Tre Fiori

S.P. Tre Fiori Football Club, also known simply as Tre Fiori (Italian: Three Flowers), is a football section of the multi-sports club S.P. Tre Fiori, based in Fiorentino, San Marino. The club, formed in 1949, has been awarded 9 national championship titles and 8 national cup titles, making them the most successful club in the history of San Marino football. In 2018 Tre Fiori was the first team from San Marino to qualify for the next round of a UEFA competition, winning 3–1 against Bala Town F.C. on aggregate in the preliminary round of the UEFA Europa League. Tre Fiori currently hold the record for most goals scored in European competition by a Sammarinese team: eight goals. They currently play in the Campionato Sammarinese di Calcio. The club colours, reflected in their crest and kit, are yellow and blue.

S.P. Tre Fiori are currently playing in the highest Sammarinese league, Campionato Sammarinese di Calcio, where they have played the majority of the seasons during their existence. The club was most successful during the 1990s when they won three Sammarinese championships and two Trofeo Federale titles. The club first won Campionato Sammarinese di Calcio in 1988 and took their latest title in 2020. S.P. Tre Fiori have long-standing rivalries with several other clubs; the most notable of these is with neighbours F.C. Fiorentino.