카초어 단자음 성모는 모두 24개가 있다.
| bilabial | plosive | p, p_h |
| bilabial | nasal | m |
| labiodental | fricative | f, v |
| velar | approximant | w |
| alveolar | plosive | t, t_h |
| alveolar | nasal | n |
| alveolar | lateral approximant | l |
| alveolar | plosive fricative | ts, ts_h |
| alveolar | fricative | s, z |
| posts alveolar | plosive fricative | ʨ, ʨ ͪ |
| palatal | nasal | ȵ |
| Alveolo- palatal | fricative | s\, z\ |
| velar | plosive | k, kʰ |
| velar | nasal | ŋ |
| velar | fricative | x, ɣ |