Galerie nächst St. Stephan, Art gallery near St. Stephen's Cathedral in Vienna, Austria.

Galerie nächst St. Stephan is a contemporary art gallery at Grünangergasse 1 in Vienna's Innere Stadt, next to the Stephansdom. Its rooms have housed an art gallery since Otto Kallir founded the Neue Galerie there in 1923. Otto Mauer opened the Galerie St. Stephan in the same premises in 1954, and it has been run by Rosemarie Schwarzwälder since 1978, as owner since 1987.

Otto Kallir founded the Neue Galerie in these rooms in 1923; after his flight in 1938, Vita Künstler led it until 1952. Gertie Fröhlich brought Otto Mauer to the vacant space, and he opened the Galerie St. Stephan there in 1954. It was renamed Galerie nächst St. Stephan in 1964 and directed by Mauer until his death in 1973.

The name refers to the gallery's location next to St. Stephen's Cathedral. Since 1958 the gallery has held regular "International Art Talks", begun at Seckau Abbey, and it still pairs thematic exhibitions with symposia; the proceedings are published and catalogues appear at intervals.

The gallery is at Grünangergasse 1 in Vienna's Innere Stadt, in the rooms next to Stephansdom that have housed an art gallery since 1923. It is reached on foot from the cathedral through the pedestrian lanes of the old town; the entrance is on Grünangergasse itself.

Monseigneur Otto Mauer turned the space into a hub for avant-garde artists and introduced Austrian audiences to Art Informel. His work transformed the institution from a religiously focused venue into a platform for experimental art.