| Abbreviation | Definition |
|---|---|
| NWSLV | NEWS CORP-PREFD |
| NWT | Newsat, LTD. |
| NXBHD | Nexus Bonds Limited |
| NXR | Nemex Resources Limited |
| NXRO | Nemex Resources Limited |
| NXS | Nexus Energy Ltd |
| NXT | Nextdc Limited |
| NYO | Nyota Minerals Limited |
| NZO | New Zealand Oil & Gas Ltd |
| OBJ | OBJ Ltd |
| OBJOA | Obj Limited |
| OBL | Oil Basins Ltd |
| OBLOA | Oil Basins Ltd |
| OBLOB | Oil Basins Limited |
| OCE | Ocean Capital Ltd |
| OCL | Objective Corporation Ltd |
| OCP | Oceania Capital Partners Limited |
| ODN | Odin Energy, LTD. |
| ODNO | Odin Energy Ltd |
| ODY | Odyssey Energy Ltd |