Sepiddasht (Persian: سپيددشت‎, also Romanized as Sepīd Dasht; also known as Īstgāh-e Sepīd Dasht and Sefīd Dasht) is a city in and capital of Papi District, in Khorramabad County, Lorestan Province, Iran. At the 2006 census, its population was 3,197, in 683 families.