Rossert is a mountain of the Taunus, part of the Anterior Taunus, in Hesse, Germany. The mountain consists of a few hilltops, two of them giving the name the Naturschutzgebiet (protected area) Rossert - Hainkopf - Dachsbau. Between them lies Eppenhain, a constituent community of Kelkheim. The name Rossert originates from an Old High German word for cobblestones.

50°10′N 8°24′E / 50.167°N 8.400°E / 50.167; 8.400