Gross Litzner, Mountain peak at Rätikon range, Austria and Switzerland

The Gross Litzner is a 3109-metre mountain in the Silvretta, straddling the border between Vorarlberg in Austria and Graubünden in Switzerland. From east and west it appears as a slender, vertically rising rock tower. The Litznergletscher lies on its north flank, and the Saarbrücker Hütte stands at the glacier's edge.

The first ascent was made on 12 September 1866 by Jules Jacot with his guide Christian Jann and A. Schlegel. The peak lies on the border between Vorarlberg and Graubünden, in the Silvretta rather than the Rätikon. A climbing summit in the Sächsische Schweiz was later named after the Großlitzner.

The mountain lies in the Silvretta, not the Rätikon, and its name was given to a climbing summit in Saxon Switzerland. The Großlitzner and the neighboring Großes Seehorn, separated by the Litzner-Hochjoch at about 2960 m, are regarded as the finest pair of peaks in the Silvretta, and the east-to-west traverse of both is a popular climb.

The normal route reaches difficulty grade II–III, so ropes and belaying are needed on the rock passages; crampons and an ice axe serve for the Litznergletscher below the north face. The Saarbrücker Hütte of the German Alpine Club stands at the glacier's edge and serves as the base for the ascent. The Großlitzner is often combined with the Großes Seehorn across the Litzner-Hochjoch at about 2960 m.

The Grosslitzner is separated from the Grosses Seehorn by the Litzner-Hochjoch at about 2960 m, and the two are considered the finest summit pair in the Silvretta. A popular route traverses both peaks from east to west at grades II and III. A climbing crag in Saxon Switzerland was also named after the Grosslitzner.