| Official Name: | Tummu |
| Native Name: | Arabic: تومو |
| Pushpin Map: | Libya |
| Pushpin Label Position: | bottom |
| Pushpin Map Caption: | Location in Libya |
| Subdivision Type: | Country |
| Subdivision Type1: | Region |
| Subdivision Name1: | Fezzan |
| Subdivision Type2: | District |
| Subdivision Name2: | Murzuq |
| Unit Pref: | Metric |
| Population As Of: | 2009 |
| Population Blank1 Title: | Ethnicities |
| Population Blank2 Title: | Religions |
| Timezone: | EET |
| Utc Offset: | +2 |
| Coordinates: | 22.653°N 14.091°W |
Tumu is a border checkpoint in Libya at the Libya–Niger border in the Murzuq District. It is 310 kilometres south of Qatrun, the closest Libyan settlement on the desert road. Tumu consists of little more than a few government shacks, and the border checkpoint is frequently closed, which requires travellers crossing from Niger to report at Qatrun.