| Abbreviation | Definition |
|---|---|
| GWHX | Stevens Energy |
| GWHX | Stevens Energy, LTD. |
| GWIX | GWI Leasing Corporation |
| GWR | God's Wonderful Railway |
| GWR | Great Western Railway |
| GWR | Great Western Railway Company |
| GWR | Great Western Railway of Colorado |
| GWR | Great Western Railways |
| GWRC | Georgia Woodlands Railroad |
| GWRC | Georgia Woodlands Railroad Company |
| GWRS | Great Western Railway |
| GWRS | Great Western Railway (Saskatchewan) |
| GWSR | Great Western Railway |
| GWSR | Great Western Railway (Saskatchewan) |
| GWSW | G W I Switching Services L. P. |
| GWSW | GWI Switching Services |
| GWWD | Greater Winnipeg Water District |
| GWWE | Gateway Eastern Railway |
| GWWE | Gateway Eastern Railway Company |
| GWWR | Gateway Western Railway |