Palacio Barolo is a landmark office building, located at 1370 Avenida de Mayo, in the neighborhood of Montserrat, Buenos Aires, Argentina.
It stood as Buenos Aires' tallest building for more than a decade until the construction of the Kavanagh Building in 1936. Its twin brother, Palacio Salvo, is a building designed and erected in Eclectic style, built by the same architect in Montevideo.
This building was declared a national historic monument in 1997. Currently, the building has several travel agencies, a Spanish school for foreigners, a store that sells clothes for tango, offices and studios of architects, accountants, lawyers, and designers.