St. Gilgen (Central Bavarian: St. Gieng) is a village by Lake Wolfgang in the Austrian state of Salzburg, in the Salzkammergut region.

Rich Viennese, such as the surgeon Theodor Billroth, started to build summer residences there.

St. Gilgen is situated in the north-western shore of the lake Wolfgangsee, close to Strobl and to the Upper Austrian municipality of St. Wolfgang.

Boats from St. Gilgen sail around the Wolfgangsee, providing transport and views of the surrounding mountains.

The hermitage of the original St. Gilgen may be seen, behind a chapel, in the Falkenstein cliffs west of St. Wolfgang and east of Fürberg.