Club Atlético Vélez Sarsfield is a sports club based in the Liniers neighborhood of western Buenos Aires, Argentina. Vélez is best known for its football team, that plays in the Argentine Primera División, the top level of the Argentine league system. Vélez has won the Argentine Primera División 8 times, and has also won 5 international cups (including both the Copa Libertadores and the Intercontinental Cup). The club's home stadium is theEstadio José Amalfitani, in the borough of Liniers. Both the club and its stadium are nicknamed el Fortín (in English: "the Small Fort"), while its fans are called Fortineros ("from the small fort").

Vélez was founded in 1910 in the Floresta neighbourhood of Buenos Aires, next to the formerly called "Vélez Sarsfield" railroad station of the Western Railway. The club first participated in the Argentine league in the 1919 amateur championship (finishing runner-up), and was one of the 18 clubs that joined to form the Argentine professional league in 1931. Relegated only once (in 1941, returning to the top level in 1943), Vélez is a regular fixture of the Argentine Primera ever since and is positioned 5th in the all-time table of the league.

Vélez clinched their first title in the 1968 Nacional championship, and spent 25 years without silverware until 1993, when the team won the Clausuratournament. The 1990s were the most successful period in Vélez' history, as they won a total of 4 domestic titles and 5 international. These included both the 1994 Copa Libertadores, where they defeated defending champions São Paulo FC in the final, and the 1994 Intercontinental Cup, where they defeated A.C. Milan. Vélez Sarsfield is also one of eight teams to have won CONMEBOL's treble.

The club clinched its most recent league title in the year 2011, when they won the Clausura tournament.