Unione Sportiva Salernitana 1919, commonly referred to as Salernitana, is an Italian professional football club based in Salerno, Campania. The original club was founded in 1919 and has been reconstituted three times in the course of its history, most recently in 2011. The current club is the heir of the former Salernitana Calcio 1919, and it restarted from Serie D in the 2011–12 season. Salernitana returned to Serie A in 2021, after a break of 23 seasons, having finished second in Serie B. They will play in Serie B after being relegated from Serie A.

Salerno is an ancient city and comune (municipality) in Campania, southwestern Italy, and is the capital of the namesake province, being the second largest city in the region by number of inhabitants, after Naples. It is located on the Gulf of Salerno on the Tyrrhenian Sea. In recent history the city hosted Victor Emmanuel III, the King of Italy, who moved from Rome in 1943 after Italy negotiated a peace with the Allies in World War II, making Salerno the capital of the "Government of the South" and therefore provisional government seat for six months. Some of the Allied landings during Operation Avalanche occurred near Salerno.