Club Atlético Vélez Sarsfield (Spanish pronunciation: [ˈsaɾfil]) is an Argentine sports club based in Liniers, Buenos Aires. Its football team plays in Primera División, the highest level of the Argentine league system. Founded in 1910, the club has spent most of its history in the top tier of Argentine football. The club's home ground is the 49,540-capacity José Amalfitani Stadium, where they have played since 1951.

One of the most successful clubs in Argentine football, Vélez Sarsfield had their first major success in 1968, when they won the league championship, and subsequently made regular seasons between 1970 and 1990. The club have enjoyed their greatest period of success in the past two decades, winning 16 trophies since 1993. Domestically, Vélez have won eleven Primera División titles, while in continental competitions have won five international cups (including both the Copa Libertadores and the Intercontinental Cup). It is one of eight teams to have won CONMEBOL's treble.

Vélez Sarsfield's regular kit colours are white shirts and shorts, with some details in blue. The club's crest has been changed several times in attempts to re-brand the club and modernise its image. It is one of the most supported clubs in Argentina. Apart from football the club takes part in other sports such as athletics, basketball, gymnastics, handball, field hockey, martial arts, tennis, roller skating and volleyball.