| Abbreviation | Definition |
|---|---|
| NBD | Norbord Incorporated (de-listed) |
| NBF | NB Split Corporation |
| NCC | Newfoundland Capital Corporation Limited |
| NCL | NiCo Mining Limited |
| NCU | Nevada Copper Corporation |
| ND | New Dawn Mining Corporation |
| NDM | Northern Dynasty Minerals Ltd. |
| NDM | Northern Dynasty Minerals, LTD. |
| NDN | Nordion Inc. |
| NDN | Nordion Incorporated |
| NDQ | Novadaq Technologies Inc. |
| NDQ | Novadaq Technologies Incorporated |
| NEM | Neo Material Technologies Inc. |
| NEM | Neo Material Technologies Incorporated |
| NEW | Newgrowth Corporation |
| NFC | Northern Financial Corporation |
| NFI | New Flyer Industries Inc. |
| NFI | New Flyer Industries Incorporated |
| NG | NovaGold Resources Inc. |
| NG | NovaGold Resources Incorporated |