Žlebe (pronounced [ˈʒleːbɛ] or [ʒlɛˈbeː]; locally also Sveta Marjeta,German: Schlebe) is a dispersed settlement in the Municipality of Medvode in the Upper Carniola region of Slovenia.
Žlebe lies in the Polhov Gradec Hills south of Medvode. It is a sprawling settlement, encompassing several dispersed hamlets and farms: Cajnar, Gmajnar, Jakob, Kršlje, Malenšek, Petelinc, Potočnik, Pri Kajžah, Pristava, Ravniški Grič (or Hrušica), Stežica (or Stešca), and Završe. In the narrow sense (as a hamlet), Žlebe refers only to the area at the highest part of the valley. The settlement spreads across Tertiary hills and low slopes of dolomite hills separated by ravines with creeks. Zakonjščica Creek is the main watercourse, with its source below Jetrbenk Hill (774 meters or 2,539 feet), and it empties into Mavelščica Creek at Seničica. Tributaries of Zakonjščica Creek include Potočnica Creek (with its source at the Potočnik farm) and Učak Creek (with its source at the Učak farm).
Zlebe was attested in written sources in 1427 as Slepach. The name is derived from the Slovene common noun žleb 'gorge, ravine', referring to the local geography. In the past, the settlement was known as Schlebe in German. Locally, the settlement is also known as Sveta Marjeta.