Canadian American Transportation Systems
| Company type | Limited liability company |
|---|---|
| Industry | Shipping |
| Defunct | 2004 |
| Fate | Dissolved |
| Headquarters | , |
Area served | Lake Ontario |
Key people | Howard Thomas, President |
| Services | Passenger transportation, Freight transportation |
| Website | www.spiritofontario.com |
Canadian American Transportation Systems LLC (CATS) was a company based in Rochester, New York which operated an international passenger and vehicle ferry service on Lake Ontario, connecting Rochester with Toronto.