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.

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).