The Pleß is a mountain, 645.4 m above sea level (NHN), in the county of Schmalkalden-Meiningen in the Salzungen Werra Highland in the German state of Thuringia.

The Pleß is generally seen as the northeasternmost mountain of the Anterior Rhön, but is counted by the Bundesanstalt für Landeskunde as part of the adjacent natural region of the Salzung Werra Upland to the northeast.

The Thurigian State Office for Geology and the Environment (Thüringer Landesanstalt für Umwelt und Geologie) sees it as part of the Rhön.

Seen from the Thuringian Forest which is somewhat further east it is on the left (east-southeast) next to the mountains of Baier, Dietrichsberg (Dietrich) and Öchsenberg (Öchsen).

At the summit of the Pleß is a viewing tower from which the mountains of the Thuringian Forest and the Rhön, the valley of the Werra and the castle of Wartburg can be seen.