| Abbreviation | Definition |
|---|---|
| CNLO | CNLO |
| CNN | Cardia Technologies, LTD. |
| CNNOA | Cardia Bioplastics Limited |
| CNO | Conto Resources Limited |
| CNP | Centro Properties Group |
| CNQ | Carbine Tungsten Limited |
| CNR | Coonawarra Australia Property Trust |
| CNS | Centius Gold Limited |
| CNU | Chorus, Limited |
| CNX | Carbon Energy Ltd |
| COE | Cooper Energy, LTD. |
| COF | Coffey International Ltd |
| COF | Coffey International LTD. |
| COH | Cochlear Ltd |
| COHKMA | Cochlear Limited |
| COHKMP | Cochlear Limited |
| COHKOD | Cochlear Limited |
| COHKOE | Cochlear Limited |
| COHKOF | Cochlear Limited |
| COHKOP | Cochlear Limited |