📸 SS Lazio Photo Gallery (Photo: 11)

Società Sportiva Lazio (Italian pronunciation: [sotʃeˈta sporˈtiːva ˈlattsjo]; BIT: SSL; Lazio Sport Club) 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 were Italian champions in 1974 and 2000. They 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. They also won the 1968-69 Serie B. Lazio share the 70,634 capacity Stadio Olimpico with Roma.

The club earliest major honour was a domestic cup win in 1958. In 1974, they won their first Serie A title. The 1990s were the most successful period in Lazio's history: they reached the UEFA Cup final in 1998; won the UEFA Cup Winners' Cup and UEFA Super Cup in 1999; and clinched the Serie A title in 2000. Due to a severe economic crisis in 2002 that forced the departure of president Sergio Cragnotti and the selling of several star players, Lazio's success in the league declined. In spite of the lower funds, the club has won four Coppa Italia titles since then: 2004, 2009, 2013 and 2019. Current president Claudio Lotito took charge of the club in 2004 following a two-year vacancy in the position.

Lazio's traditional kit colours are sky blue shirts and white shorts with white socks; these reflect Rome's ancient Hellenic legacy. Sky blue socks have also been interchangeably used as home colours. Lazio share a long-standing and fierce rivalry with Roma, against whom they have contested the Derby della Capitale (\"Derby of the capital city\") 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 different sports disciplines in total.