Saint-Augustin is a station that serves Line 9 of the Paris Métro, named after the Place Saint-Augustin and the Saint-Augustin church. The station opened on 27 May 1923 with the extension of the line from Trocadéro. Fare Zone: 1.

Since extension of Line 14 to Saint-Lazare in 2004, it is connected to Saint-Lazare metro station (which is near Saint-Lazare railway station) by a long underground passageway. This allows interchange to Line 14.

The current Saint-Augustin church, built in 1868 by Baltard, replaced an old chapel which was also dedicated to St Augustine (354–430).