Frosinone CalcioFrosinone Calcio has two birthdays. The club's constitutive act is dated 5 March 1906, when the lawyer Leone Vivoli, later mayor of the city, founded the Unione Sportiva Frusinate. Yet the club's official lineage conventionally begins in 1928, with its second affiliation to the Italian football federation. After being struck off by the federation, the club was refounded in 1990. This history of interruptions and restarts goes a long way towards explaining why the yellow-and-blues are known for persistence rather than for quick fame.
For most of the twentieth century Frosinone lived in the lower divisions. Its first national titles were two in Serie D (1965–66 and 1970–71), followed by two in Serie C2 (1986–87 and 2003–04). The step up to Serie B came in 2005–06, through the Serie C play-offs, and since then the club has spent most of the twenty-first century in the second tier, with only brief spells above it.
The defining day came on 16 May 2015, when a 3–1 win over Crotone secured the club's first-ever promotion to Serie A. The striker Federico Dionisi, who scored 62 goals in 192 appearances for Frosinone between 2014 and 2021, was one of the men who helped get the side there. On 28 September 2015 he scored twice in a 2–0 home win over Empoli, his first goals in the top flight.
Frosinone have played in Serie A three times, in 2015–16, 2018–19 and 2023–24, and each stay ended in relegation. The second promotion came in 2018, and the third in 2022–23, when the club won the Serie B title, its best result to date at national level. During the following Serie A season it finished 18th, but it left one memorable night behind: on 20 December 2023, in the round of 16 of the Coppa Italia, Frosinone beat Napoli 4–0.
The club takes its nickname Ciociari from Ciociaria, the historic area around the city, and is also known as the Canarini and the Giallazzurri, after its yellow and blue colours. It plays at the Stadio Benito Stirpe, which holds 16,227 spectators and is named after Benito Stirpe, father of the club's chairman Maurizio Stirpe. The Stirpe family owns the club, and this continuity at the top contrasts with the turbulence of its earlier decades.
The story has not stopped. In 2025–26 Frosinone finished second in Serie B, one point behind Venezia, and earned promotion to Serie A for the 2026–27 season. It will be the club's fourth attempt to establish itself among Italy's elite, and one that Frosinone has so far always had to pursue from below.