Buenos Aires Carnival (Carnaval de Buenos Aires) — neighbourhood corsos (February — 2026 edition ran February 7 through March 1, evenings from 18:30). Free street carnival parades (corsos) in neighbourhoods including La Boca, San Telmo (Lezama Park), Mataderos, and Caballito; features murga drum groups and comparsa dance troupes. Closing gala at Oscar y Juan Galvez…
Buenos Aires International Book Fair (Feria Internacional del Libro de Buenos Aires) (Late April to mid-May — 2026 (50th edition): April 23 to May 11). Founded 1975; held at La Rural fairgrounds (Palermo); 1.2 million annual visitors across ~45,000 sq m; listed among the top five book fairs in the world. Organised by Fundacion El Libro.
Buenos Aires International Tango Festival and World Championship (Festival y Mundial de Tango Buenos Aires) (Late August to early September — 2025 edition: August 20 to September 2). Annual city-government event offering 500+ free activities, 2,000+ artists across 50 venues; includes milongas, orchestras, dance competitions, and film screenings. Organised by the Buenos Aires Culture Ministry.
Buenos Aires Fashion Week (BAFWEEK) — Spring/Summer edition (Late August to early September — 2024 edition: August 28 to September 6). Biannual trade show at La Rural fairgrounds; Argentina's most important fashion event, running for more than 20 years. Spring/Summer edition previews Primavera-Verano collections.