| Abbreviation | Definition |
|---|---|
| CRDA | Converging Runway Display Aid |
| CRDE | Common Rail Diesel Engine |
| CREATS | Cairo Regional Area Transportation Study |
| CREW | Cranky Rider Endless Waiting |
| CRF | County Road Funds |
| CRH | Camber of the Rail Head |
| CRH | China Railway High-speed |
| CRIS | County Road Inventory System |
| CRIS | The Centre for Railway Information Systems (India) |
| CRJ | Canadair Regional Jet |
| CRJ | Climb Restricted Jet |
| CRLIND | Civil Rail Lines Important To National Defense |
| CRNR | Columbia River Northern Railway |
| CROS | Contralateral Routing Of Signals |
| CRP | Central Receiving Point |
| CRR | Certified Return Receipt |
| CRR | Chicago Russian Riders |
| CRRW | Chinese Railroad Workers |
| CRS | Carrier Routing System |
| CRS | Central Reservation System |