| Code | Name | Region |
|---|---|---|
| PHCRM | Catarman | |
| PHCTS | Catbalogan, Samar | |
| PHMPH | Caticlan | |
| PHCYZ | Cauayan | |
| PHCAV | Cavinti | LAG |
| PHCVE | Cavite, Luzon | |
| PHCEB | Cebu | |
| PHKLR | Clark Field (angeles) | PAM |
| PHCLP | Calapan/batangas | |
| PHCLT | Calatagan | BTG |
| PHCLG | Calauag | QUE |
| PHCYP | Calbayog Apt, Samar | |
| PHCBY | Calbayog, Samar | |
| PHCDB | Caldera Bay/zamboanga | |
| PHCAC | Caloocan City | |
| PHCWY | Calowayan/catabalogan | |
| PHCUG | Calubian, Leyte | LEY |
| PHCGP | Calug Point/zamboanga | |
| PHUPT | Calumpit | BUL |
| PHCML | Camalagawan/aparri | |
| PHCAM | Camarines Norte/jose Panganiban | |
| PHCGM | Camiguin Island/aparri | |
| PHCNY | Canaybon/catbalogan | |
| PHCND | Candaba | PAM |
| PHCDA | Candelaria | QUE |
| PHCNN | Candon | ILS |
| PHCLB | Canlubang | LAG |
| PHCNT | Cantilan/surigao | |
| PHBUR | Burdeos, Polillo Isl | QUE |
| PHPPB | Busan Bay | ZAS |
| PHBUS | Bustos | BUL |
| PHUSU | Busuanga | |
| PHBXU | Butuan Bay/masao | |
| PHBTC | Butuan City | AGN |
| PHCBT | Cabanatuan | NUE |
| PHCAB | Cabugao Bay/legaspi | |
| PHCAZ | Cadiz | |
| PHCGY | Cagayan De Oro, Mindanao | |
| PHCDY | Cagayan De Sulu | |
| PHCDN | Cagdianao | SUN |
| PHCHO | Cahalo | PAM |
| PHCAI | Cainta | RIZ |
| PHCAJ | Cajidiocan, Visayan Isl | ROM |
| PHCAA | Calaca | |
| PHCCG | Calag-calag/dumaguete | |
| PHCGT | Calaguitan/tacloban | |
| PHCAL | Calamba | |
| PHCLM | Calamba | LAG |
| PHNAN | Binan | CAV |
| PHBIN | Binan | LAG |