Unione Calcio AlbinoLeffe is an Italian association football club representing Albino and Leffe, two small towns located in Val Seriana, Lombardy.

In their first season, the club finished 2nd in the Serie C2 and won a promotion having defeated A.C. Prato in the Girone A Play-offs final.

Even though AlbinoLeffe was considered to be an outsider in Serie B, which historically includes several former Scudetto winners, the team remarkably managed to avoid relegation in the last two seasons.

The 2006–2007 Serie B campaign, the fourth consecutive for the small Lombard team, ended with a good tenth place, well ahead of the relegation zone.

During the season, AlbinoLeffe confirmed as a potential candidate for direct promotion to Serie A, however a string of poor results, ended with four consecutive home defeats, the final one being a 0–4 loss to Rimini, denied them the chance to achieve a place in the top two, and persuaded club chairman Gianfranco Andreoletti to sack Gustinetti, who then confirmed not to be in good relationships with the chairman, and appoint youth team coach Armando Madonna as caretaker boss for the final regular season match and the following promotion playoffs.

From the 2003–04 Serie B season and until 2019, AlbinoLeffe played its home games at the Atleti Azzurri d'Italia stadium in the city of Bergamo.

Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.