| Tumtum | |
| States: | Sudan |
| Region: | South Kordofan |
| Date: | 2022 |
| Ref: | e27 |
| Dia1: | Karondi |
| Dia2: | Talassa |
| Dia3: | Tumtum |
| Familycolor: | Nilo-Saharan |
| Fam1: | Nilo-Saharan? |
| Fam2: | Kadu |
| Fam3: | Kadugli–Krongo |
| Fam4: | Eastern |
| Map2: | Lang Status 40-SE.svg |
| Iso3: | tbr |
| Glotto: | tumt1243 |
| Glottorefname: | Tumtum |
Tumtum is a Nilo-Saharan language of the Kadu branch spoken in South Kordofan, Sudan. Dialects are Karondi (Kurondi, Korindi), Talassa, and Tumtum proper.