Słonne Mountains Landscape Park (Park Krajobrazowy Gór Słonnych) is a protected area (Landscape Park) in south-eastern Poland, established in 1992, covering an area of 513.92 square kilometres (198.43 sq mi). It lies in the Słonne Mountains (Polish: Góry Słonne, literally "salt (brine) mountains") in the Eastern Carpathians (Carpathian Plateau). Administratively the Park is within Subcarpathian Voivodeship: in Bieszczady County (Gmina Ustrzyki Dolne), Lesko County (Gmina Lesko, Gmina Olszanica) and Sanok County (Gmina Sanok, Gmina Tyrawa Wołoska). Within the Landscape Park are nine nature reserves.