AS Ostia Mare

Although a company that represented what was still a village already existed in 1923 as Associazione Sportiva Ostia, the Associazione Sportiva Ostia Mare Lido Calcio officially by that name existed since 1945. It played for many years in the minor leagues until 1983, when it was in the championship of Prima Categoria (then the second-level football on a regional basis), did not buy a sports title of another company by granting access to Serie D.

In the late eighties, the team reached the top step of its history in Serie C2 landing, managing to maintain in the category for two seasons (1989-90/1990-1991 championships). The reason for the golden era of those years is due to the influence and the indirect financing of AS Roma, which was looking for promising young players from Ostiamare to enhance its team (during the presidency of the Rome of the late Dino Viola). A tournament was held in the province of Rome, recalling the former president's commitment to the growth of companies in the town of Rome.

In recent years, after a few swings with the most significant regional championships (Promozione and Eccellenza), Ostiamare became a constant presence in the Serie D.

In the 2007–2008 season, Ostiamare was relegated to Eccellenza. At the end of the 2008–2009 season, in Eccellenza Lazio/A, it was saved by finishing in 9th place in the standings. The club finished in mid-table also in the following two seasons.

The 2011–2012 season was significantly different, in which Ostiamare gained promotion to Serie D after four years of absence.

On 24 January 2025, former Italy international player and Roma player and coach Daniele De Rossi became the owner and chairman of Ostiamare, thus acquiring what was his first team as a youth player.