Società Sportiva Calcio Napoli (pronounced [sotʃeˈta sporˈtiːva ˈkaltʃo ˈnaːpoli]), commonly known as SSC Napoli or simply Napoli, is an Italian professional football club based in Naples, Campania that currently competes in the Serie A, the highest league of Italian football. Napoli are among the most successful clubs in the nation—especially as of late. They have won four league titles, six Coppa Italia, two Supercoppa Italiana and one UEFA Cup. Napoli are the reigning champions of Italy, after securing their second title in three seasons this year.

The club was formed in 1926 as Associazione Calcio Napoli following the merger of US Internazionale Napoli and Naples Foot-Ball Club. Napoli saw relatively little success in its early years, winning their first major trophy in the 1962 Coppa Italia. Napoli then saw increased success in the late 1970s (including their second Coppa Italia in 1976) and especially in the 1980s, after the club acquired Diego Maradona in 1984. During his time in Naples, Maradona helped the team win its first two league titles (in 1987 and 1990), the 1987 Coppa Italia, the 1990 Supercoppa Italiana, and their only European trophy with the 1989 UEFA Cup. Following his departure, however, Napoli struggled financially, and endured relegations and a bankruptcy, prior to being re-founded in 2004 by film producer Aurelio De Laurentiis. Under his leadership, the club returned to Serie A and experienced a new era of success, winning three Coppa Italia (in 2012, 2014 and 2020), the 2014 Supercoppa Italiana and two Serie A titles in 2023 and 2025.

By attendance, Napoli have the fourth-largest fan base in Italy, and were ranked as the fifth highest-earning football club in Serie A, with $182 million in revenue during the 2017–18 season. In 2018, Forbes estimated the club is the fifth most valuable club in Italy, worth $379 million. Napoli are also one of the associate members of the European Club Association.

Since 1959, the club has played their home games at the Stadio San Paolo, which was renamed Stadio Diego Armando Maradona after the Argentine striker's death in 2020. Napoli traditionally wear sky blue shirts, white shorts, and sky blue socks at home and white shirts, white or sky blue shorts, and white or sky blue socks away; this is derived from the shirts of Naples FBC and the shorts of Internazionale Napoli after the clubs merged to form Napoli's predecessor Internaples in 1922. Napoli have rivalries with Juventus, Roma (Derby del Sole), Internazionale, AC Milan and Salernitana (Derby of Campania). The club's anthem is \"Napoli\", one of the major hits of the Neapolitan singer Nino D'Angelo.