| Abbrev | Name | Spec | Type | Locality |
|---|---|---|---|---|
| CEN,2 | CRIMEAN[3733] | TR.AE | W | UKR(Introd.) |
| CIA,3 | CRISTINA[3733] | TR.AE | S | PER |
| CUCU | CUCURPE-86[3733] | TR.AE | S | MEX |
| CUMP | CUMPAS-88[3733] | TR.AE | S | MEX |
| CURI | CURINDA-87[3733] | TR.AE | S | MEX |
| CRRL | CURREL[3733] | TR.AE | W | USA |
| CUS | CUSTER[3733] | TR.AE | W | USA:OK |
| CYA | CUYAMA[3733] | TR.AE | S | USA |
| CVL22 | CVL-22-4[3733] | TR.AE | W | USA |
| DAN | DANUBIA[3733] | TR.AE | W | SVK |
| DMA,2 | DARUMA[3733] | TR.AE | S | JPN |
| DAQ | DELTA-QUEEN[3733] | TR.AE | W | USA |
| DIN | DIAMANTE-INTA[3733] | TR.AE | S | ARG |
| DOND | DIAMOND[3733] | TR.AE | S | SWE |
| DHL | DIEHL[3733] | TR.AE | W | |
| DKW | DIRKWIN[3733] | TR.AE | S | USA:ID |
| DCO | DISCOVERY[3733] | TR.AE | W | USA |
| DPT | DISPONENT[3733] | TR.AE | W | DEU |
| D911 | DIXIE-911[3733] | TR.AE | W | USA |
| D953 | DIXIE-953[3733] | TR.AE | W | USA |