Tha Tum (Thai: ท่าตูม, pronounced [tʰâː tūːm]) is a district (amphoe) in the northern part of Surin province, northeastern Thailand.

Neighboring districts are (from the east clockwise): Rattanaburi, Sanom and Chom Phra of Surin Province; Satuek of Buriram province; Chumphon Buri of Surin; Kaset Wisai and Suwannaphum of Roi Et province.

The district is divided into 10 sub-districts (tambons), which are further subdivided into 165 villages (mubans).

Tha Tum is a township (thesaban tambon) which covers parts of tambon Tha Tum.

This Surin Province location article is a stub.