Tour Alto is an office skyscraper in Courbevoie, in La Défense, the business district of the Paris metropolitan area.

The tower was built in 2020 by Bouygues. The building is 160 m (520 ft) from the street and 150 m from the slab of La Défense on its eastern facade alone for a total of 38 floors. Its rounded shape gradually widens upwards and extends its hold in space by an offset of 12 cm towards the outside of the edge beam, on each floor. Thanks to this singular shape, the surface of the levels goes from 700 m2 at the foot of the Tower to 1,500 m2 at the top.

Work began in September 2016 for delivery in 2020.

• La Défense
• List of tallest buildings and structures in the Paris region
• List of tallest buildings in France

• Tour Alto