Società Sportiva Lazio, commonly referred to as Lazio, is an Italian professional sports club based in Rome, most known for its football activity. The society, founded in 1900, plays in the Serie A and have spent most of their history in the top tier of Italian football. Lazio have been Italian champions twice (1974, 2000), and have won the Coppa Italia seven times, the Supercoppa Italiana five times, and both the UEFA Cup Winners' Cup and UEFA Super Cup on one occasion.
The club had their first major success in 1958, winning the domestic cup. In 1974, they won their first Serie A title. The 1990s have been the most successful period in Lazio's history, seeing them win the UEFA Cup Winners' Cup and UEFA Super Cup in 1999, the Serie A title in 2000, and reaching their first UEFA Cup final in 1998. Due to a severe economic crisis in 2002 that forced president Sergio Cragnotti out of the club along with several star players being sold, Lazio's success in the league declined. In spite of the lower funds, the club has won four Coppa Italia titles since then; in 2004, 2009, 2013 and 2019. Current president Claudio Lotito took charge of the club in 2004 after two years of a vacuum after Cragnotti's departure.
Lazio's traditional kit colours are sky blue shirts and white shorts with white socks; the colours are reminiscent of Rome's ancient Hellenic legacy. Sky blue socks have also been interchangeably used as home colours. Their home is the 70,634 capacity Stadio Olimpico in Rome, which they share with A.S. Roma until 2020, when the latter will leave for the Stadio della Roma. Lazio have a long-standing rivalry with Roma, with whom they have contested the Derby della Capitale (in English "Derby of the capital city" or Rome derby) since 1929.
Despite initially not having any parent–subsidiary relation with the male and female professional team (that was incorporated as S.S. Lazio S.p.A.), the founding of Società Sportiva Lazio allowed for the club that participates in over 40 sports disciplines in total, more than any other sports association in the world.
The Stadio Olimpico is the main and largest sports facility of Rome, Italy. It is located within the Foro Italico sports complex, north of the city. The structure is owned by the Italian National Olympic Committee and it is used primarily for association football. The Stadio Olimpico is the home stadium of Lazio and Roma and also hosts the Coppa Italia final. It was rebuilt for the 1990 FIFA World Cup and it hosted the tournament final.
Rated an UEFA category four stadium, it has also hosted four European Cup finals, the most recent being the 2009 UEFA Champions League Final. Outside football, the stadium is used by the Italian national rugby union team and it is Italy's national athletics stadium. Occasionally, it hosts concerts and events.