CN Marine
| Industry | Shipping |
|---|---|
| Founded | 1977 |
| Defunct | 1986 |
| Fate | Rebranded as Marine Atlantic |
| Headquarters | , |
Area served | Atlantic Canada |
| Services | Passenger transportation Freight transportation |
| Parent | Canadian National Railway |
CN Marine was a Canadian ferry company headquartered in Moncton, New Brunswick. It was a subsidiary of Canadian National Railway, a federal Crown corporation. Created in 1977, nine years later it was converted into a completely separate Crown corporation, Marine Atlantic.