The Café Tortoni is a coffeehouse located at 825 Avenida de Mayo in Buenos Aires, Argentina.

In 1898 the entrance on Avenida de Mayo was opened, and the facade was redesigned by architect Alejandro Christophersen.

Among its visitors were Alfonsina Storni, Baldomero Fernández Morenoes, Juana de Ibarbourou, Arthur Rubinstein, Ricardo Vines, Roberto Arlt, José Ortega y Gasset, Jorge Luis Borges, Molina Campos, and Benito Quinquela Martín.

Currently the basement works as stage for jazz and tango artists, and for the presentation of book and poetry contests.

The café has conserved the decoration of its early years, has a library and at the back facilities to play billiards, dominoes and dice.