List of reporting marks: Q
# List of reporting marks: Q

Note: Marks ending in U are for container owners; marks ending in X are not common carriers; marks ending in Z are for trailers without flanged wheels. All other marks are of common-carrier railroads.

## Q

* QC - Quebec Central Railway
* QCCX - Quantum Chemical Corporation
* QGRY - Quebec Gatineau Railway
* QNSX - Rail Enterprises Inc. (Doing Business As: Quebec North Shore and Labrador Railway on behalf of Iron Ore Company of Canada)
* QOCX - GE Rail Services
* QOHX - Quaker Oats Company
* QOTX - Quaker Oats Company (Chemicals Division)
* QRR - Quincy Railroad
* QSMX - Quaker State Oil Refining Corporation
* QSOX - Quaker State Oil Refining Corporation
* QTTX - TTX Corporation
