Club Atlético Vélez Sársfield 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 the Estadio 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 Sársfield" 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 Sársfield may refer to:

Mauro Matías Zárate (born 18 March 1987) is an Argentine footballer who plays for Serie A club Internazionale on loan from Lazio.

Zárate started his career with Vélez Sársfield in his native country, playing three years for the team and winning the Primera División title in the 2005 Clausura tournament. He later signed for Qatari side Al-Sadd in 2008, where he played only six months before transferring on loan to Birmingham City in England. However, after Birmingham's relegation, Zárate was loaned out again, this time to Lazio in Italy. With Lazio, the forward won the Coppa Italia during his first season. At the end of his debut season, his move to Lazio was made permanent for a fee of around €20 million, with a €60 million buy-out clause.

In international football, Zárate scored the winning goal as the Argentina under-20 team won the 2007 FIFA U-20 World Cup final.

Zárate began his club football career at Vélez Sársfield, where he played since childhood. At 17, considered too strong for the youth category, he was promoted in the first team where he made his full debut on 21 April 2004 against Arsenal de Sarandí. He shared the top-scorer award for the Apertura 2006 with Rodrigo Palacio (Boca Juniors) with 12 goals each.