Félix Loustau (Spanish pronunciation: [lusˈto])[1] (25 December 1922 – 5 January 2003) was an Argentine footballer who was a key player on the River Plate squad known as La Máquina.

La Maquina is considered to be one of the greatest team ever assembled in the history of South American football.

They dominated Argentine football during the first half of the 1940s, winning eight national titles during his time at the club.

The five forwards on the team were Juan Carlos Muñoz, José Manuel Moreno, Adolfo Pedernera, Ángel Labruna and Loustau.

Nevertheless, he played 28 times for Argentina scoring ten goals.