Saint-Augustin (French pronunciation: [sɛ̃t‿oɡystɛ̃] ) is a station on Line 9 of the Paris Métro. Named after Place Saint-Augustin (itself named after Saint-Augustin church), the station opened on 27 May 1923 with the line's extension from Trocadéro. It is located in the 8th arrondissement.

After the extension of Line 14 to Saint-Lazare opened in 2004, the station was connected to Saint-Lazare Métro station (which is near Saint-Lazare railway station) by a long underground passageway. This allows interchange to Line 14 as advertised on RATP maps. There is also connection to Lines 3, 12 and 13 via the Line 14 platforms, but under normal operating conditions these connections are not useful and are not indicated on RATP maps.

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

G	Street Level	Exit/Entrance
B1	Mezzanine	Fare control
B2	Side platform, doors will open on the right
	Westbound	← toward Pont de Sèvres (Miromesnil)
	Eastbound	→ toward Mairie de Montreuil (Havre–Caumartin) →
	Side platform, doors will open on the right

• Roland, Gérard (2003). Stations de métro. D'Abbesses à Wagram. Éditions Bonneton.