| Abbrev | Name | Spec | Type | Locality |
|---|---|---|---|---|
| CTZ | CENTEIROZ[145][900][1765]; | TR.AE | S | BRA |
| CUC | CUCKOO[114][144][900][1281]; | TR.AE | S | MEX |
| CUNCO | CUNCO-INIA[145][1281]; | TR.AE | CHL | |
| CUPE | CUCURPE-86[144][1281]; | TR.AE | S | MEX |
| CUVA | CUKUROVA-86[144][1281]; | TR.AE | TUR | |
| CVA | CHOVA[114][144][900][1281]; | TR.AE | S | MEX |
| CVC | CARAVACA[900][1281]; | TR.DR | S | ESP |
| CVO | CUERVO[114][144][900][1281]; | TR.AE | S | ECU |
| CXL | COXILHA[145][900][1281]; | TR.AE | S | BRA |
| CXLS | COXILHA-S[145]; | TR.AE | S | BRA |
| CYG,2 | CYGNE[115]; | TR.DR | S | MEX |
| CYUS | CYGNUS[115][1281]; | TR.DR | S | MEX |
| CZHO | CARAZINHO[145][144][900][1765]; | TR.AE | S | BRA |
| CZV | CRVENA-ZVEZDA[1281]; | TR.AE | W | YUG |
| D,2 | DWARF[144] | TR.AE | USA:CALIFORNIA | |
| D.BUCK | DURUM-BUCK | TR.DR | ||
| DA | DURAL[900][1281]; | TR.DR | S | AUS |
| DA2 | DEIR-ALLAH-2 | TR.DR | S | JOR |
| DACK | DACKIYE[115][1281]; | TR.DR | S | MEX |
| DAT | DURATI[900][1281]; | TR.DR | S | AUS |