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NSW Railway Lines Other Than Standard Gauge
The following are railway lines with NSW which are other than standard gauge (1435mm or 4ft 8½in).| Line | Gauge | Notes |
| Goondah - Burrinjuck Line | 610mm | Construction railway for Burrinjuck Dam |
| Katoomba - Jamieson Valley | 1067mm (narrow gauge) | Katoomba Scenic Railway (world's steepest incline railway). |
| Mittagong - Joadja Line | 1067mm (narrow gauge) | Private railway serving the Joadja oil shale mines |
| Tarrawingee Line | 1067mm (narrow gauge) | Originally a private line, later taken over by the NSWGR |
| Port Pirie - Broken Hill Line | 1067mm (narrow gauge) | Original main line from Adelaide |
| South Coast Line | 1067mm (narrow gauge) | Queensland branch extending into NSW |
| Robinvale - Lette Line | 1600mm (broad gauge) | Victorian branch extending into NSW |
| Balranald Line | 1600mm (broad gauge) | Victorian branch extending into NSW |
| Deniliquin Line | 1600mm (broad gauge) | Victorian branch extending into NSW |
| Tocumwal Line | 1600mm (broad gauge) | Victorian branch extending into NSW |
| Stony Crossing Line | 1600mm (broad gauge) | Victorian branch extending into NSW |
| Oaklands Line | 1600mm (broad gauge) | Victorian branch extending into NSW |
| Murray River Bridge - Albury Line | 1600mm (broad gauge) | Dual gauge (standard/broad) extending into NSW |