Hildburghausen is a district in Thuringia, Germany. It is bounded by (from the west and clockwise) the district of Schmalkalden-Meiningen, the city of Suhl, the districts of Ilm-Kreis, Saalfeld-Rudolstadt and Sonneberg, and the state of Bavaria (districts of Coburg, Haßberge and Rhön-Grabfeld). Located roughly halfway between the mountain chains of the Rhön and the Thuringian Forest, the district is densely forested and covered by hilly countryside. Its territory is similar to that of the former Ernestine duchy, Saxe-Hildburghausen.