| Lumbu | |
| Nativename: | Ilumbu |
| States: | Gabon, Republic of the Congo |
| Ethnicity: | Balumbu, Babongo Pygmies |
| Date: | 2000 |
| Ref: | e18 |
| Familycolor: | Niger-Congo |
| Fam2: | Atlantic–Congo |
| Fam3: | Benue–Congo |
| Fam4: | Bantoid |
| Fam5: | Bantu (Zone B) |
| Fam6: | Sira (B.40) |
| Iso3: | lup |
| Glotto: | lumb1249 |
| Glottorefname: | Lumbu |
| Guthrie: | B.44 |
Lumbu is a Bantu language spoken in Gabon and the Republic of the Congo.