Wang Saphung (Thai: วังสะพุง; IPA: [wāŋ sā.pʰūŋ]) is a district (amphoe) in the central part of Loei province, northeastern Thailand.

The district has been the site of a long-standing dispute between the villagers of Ban Na Nong Bong and its environs and Tungkum Limited, a subsidiary of Tongkah Harbour PCL.

Tungkum extracts gold from an open pit mine in district and has been charged with environmental destruction by many of those living nearby.

On 30 March 2016, the Loei Provincial Court dismissed a civil defamation lawsuit brought by six KRBKG members who live in communities near the open-pit copper-gold mine, for erecting signs in 2015 at the Na Nong Bong village entrance gate and along the main road in the village, calling for the closure of the controversial mine and rehabilitation of the local environment.

Tungkum has brought at least 19 criminal and civil lawsuits against 33 members of the KRBKG and other villagers in the past seven years, including the case dismissed yesterday.