| Oroko | |
| Nativename: | Balondo |
| Region: | Southwest and Kribi |
| States: | Cameroon |
| Date: | 2000 |
| Ref: | e18 |
| Familycolor: | Niger-Congo |
| Fam2: | Atlantic–Congo |
| Fam3: | Benue–Congo |
| Fam4: | Bantoid |
| Fam5: | Bantu (Zone A) |
| Fam6: | Sawabantu (A.10) |
| Dia1: | Kundu |
| Dia2: | Lue |
| Dia3: | Mbonge |
| Dia4: | Ekombe |
| Dia5: | Londo ba Nanga |
| Dia6: | Londo ba Diko |
| Dia7: | Ngolo |
| Dia8: | Bima |
| Dia9: | Tanga or Batanga |
| Dia10: | Koko |
| Iso3: | bdu |
| Glotto: | orok1266 |
| Glottorefname: | Oroko |
| Guthrie: | A.101 (ex-A.11,12) |
Oroko, also Bakundu-Balue or Balundu-Bima, is a Sawa Bantu dialect cluster spoken in Cameroon.
Varieties are Kundu/Nkundu (Lokundu, Bakundu), Lue (Lolue, Balue), Mbonge, Ekombe, Londo (Londo ba Nanga; cf. Londo), Londo ba Diko, Ngolo (Longolo; cf. Ngolo dialect), Bima, Tanga (Lotanga, Batanga), and Koko (Lokoko, Bakoko: distinct from Bakoko language). Maho (2009) treats these as ten distinct languages.
| Bilabial | Labio- dental | Alveolar | Post-alv./ Palatal | Velar | Labial- velar | ||||
|---|---|---|---|---|---|---|---|---|---|
| plain | lab. | ||||||||
| Nasal | m | n | ɲ | ŋ | |||||
| Plosive/ Affricate | voiceless | p | t | t͡ʃ | k | kʷ | k͡p | ||
| voiced | b | d | d͡ʒ | ɡʷ | |||||
| prenasal | ᵐb | ⁿd | ᶮd͡ʒ | ᵑɡ | ᵑɡʷ | ᵑᵐɡ͡b | |||
| Fricative | voiceless | ɸ | f | s | |||||
| voiced/pren. | β | ᶬf, ᶬv | |||||||
| prenasal | ⁿf, ⁿv | ||||||||
| Liquid | l ~ r | ||||||||
| Approximant | j | w | |||||||
| Front | Central | Back | ||
|---|---|---|---|---|
| Close | i | u | ||
| Close-mid | e | o | ||
| Open-mid | ɛ | ɔ | ||
| Open | a |
| b | c | ɗ | e | ɛ | f | i | j | k | kp | m | mb | n | nd | ng | ngb | nj | ny | ŋ | o | ɔ | s | t | u | w | y |