Ultra Buenos Aires is a renowned outdoor electronic music festival held in Buenos Aires, Argentina, as part of the global Ultra Music Festival series. Initially a one-day event, it has evolved into a typically two-day festival showcasing a diverse range of electronic dance music (EDM) genres. The festival features multiple stages, each hosting internationally acclaimed DJs and artists, and boasts impressive stage designs and high-quality production. After a ten-year hiatus, Ultra Buenos Aires is set to return in April 2025 at Parque de la Ciudad. Past editions have taken place at locations including Costanera Sur and Ciudad del Rock, and have featured artists such as Justice, Kaskade, Knife Party, Afrojack, and Porter Robinson.