Wanon Niwat (Thai: วานรนิวาส, pronounced [wāː.nɔ̄ːn ní(ʔ).wâːt]; Northeastern Thai: วานรนิวาส, pronounced [wa᷇ː.nɔ᷇ːn nì(ʔ).wâːt]) is a district (amphoe) in the northern part of Sakon Nakhon province, northeast Thailand.

Neighboring districts are (from the north clockwise) Ban Muang, Kham Ta Kla, Akat Amnuai, Phanna Nikhom, Phang Khon, Sawang Daen Din and Charoen Sin.

The Chinese state-owned China Ming Ta Potash Corporation, gained permission for five years to explore 120,000 rai of land in the district in 2015.

Residents of the district's 82 villages are concerned about the potential environmental impacts of mining projects.

[1] Potash mining produces large quantities of salt tailings.