Subarnapur District (Oriya: ସୁବର୍ଣ୍ଣପୁର ଜିଲ୍ଲା), also called Sonepur District or Sonapur District, is an administrative district of Odisha state in eastern India. The town of Sonepur is the district headquarters. Many loosely call the people of Sonepur region as Sonepuria.
According to historians the Subarnapur district was known as Paschima Lanka or Western Lanka around 10th-11th centuries. The evidence comes from a copper plate charter issued on late of 10th century by a Somavansi prince named Kumara Someswaradeva of Subarnapur district. The Prince had identified himself as the king of Paschima Lanka. It was further found that the Mahada copper plate grant of Kumara Someswaradeva was registered on the bank of river Chitrotpala (Mahanadi) and near to the province of Lanka. The presiding deity of Paschima Lanka was goddess Lankeswari.
This district earned the name “Subarnapur” during the time of Somavamsi ruler. The district was established in 1993.
Subarnapur District is known for its influentially rich cultural heritage, arts and crafts. For instance, textiles and terracotta of Sonepur, Brass metal works and Philigri crafts of Tarbha and Binka, Stone carving of Ullunda and Paddy crafts of Dunguripali are recognized all over the state and also in country. In addition, the great poet and prophet of Mahima Dharma, Santh Bhima Bhoi was from this district. Besides, Subarnapur area is famous for 'Danda-nata', a religious folk tradition generally performed in the month of Chaitra. Historically Sonepur region was known as Paschima Lanka.