The Kavanagh Building (Spanish: Edificio Kavanagh) is a famed skyscraper in Retiro, Buenos Aires, Argentina. Designed in 1934 by architects Gregorio Sánchez, Ernesto Lagos and Luis María de la Torre, it is considered a pinnacle of modernist architecture.[3] At the time of its inauguration in 1936, the Kavanagh was the tallest building in Latin America surpassing the Palacio Salvo built in Montevideo in 1928, as well as the tallest building in the world with a reinforced concrete structure.

It is considered one of the quintessential buildings of Buenos Aires.[4][5] A 2013 Clarín survey of 600 people who are not architects or builders found that the Kavanagh is the most liked building among porteños.[6] The Kavanagh Building was declared a Historic Civil Engineering Landmark by the American Society of Civil Engineers in 1994 and a National Historic Monument of Argentina in 1999.