| Mbu | |
| Nativename: | Ajumbu |
| States: | Cameroon |
| Speakers: | 200 |
| Date: | 2011 |
| Ref: | e18 |
| Familycolor: | Niger-Congo |
| Fam2: | Atlantic–Congo |
| Fam3: | Volta–Congo |
| Fam4: | Benue–Congo |
| Fam5: | Southern Bantoid |
| Fam6: | Western Beboid (geographic) |
| Fam7: | Ajumbu - Lung |
| Iso3: | muc |
| Glotto: | mbuu1238 |
| Glottorefname: | Ajumbu |
Mbu, or Ajumbu, is a Southern Bantoid language of Cameroon. It is traditionally classified as a Western Beboid language, but that has not been demonstrated to be a valid family. Inasmuch as Western Beboid may be valid, Mbu would appear to be the most divergent of its languages.
"Mbu" is the name of the village the language is spoken in.
| Close | i y | ɨ | u | |
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| Mid | e ɛ | ə | o ɔ | |
| Open | a |