 Cambodia
 Cambodia
| ISO 3166-1 numeric 116 | ISO 3166-1 alpha-3 KHM | ISO 3166-1 alpha-2 KH | ICAO airport code prefix VD | 
| E.164 code 855 | IOC country code CAM | Country code top-level domain .kh | ICAO aircraft regis. prefix XU- | 
| E.212 mobile country code 456 | NATO three-letter code KHM | NATO two-letter code CB | LOC MARC code CB | 
| ITU Maritime ID 514, 515 | ITU letter code CBG | FIPS country code CB | License plate code K | 
| GS1 GTIN prefix 884 | UNDP country code CMB | WMO country code KP | ITU callsign prefixes XUA-XUZ | 
 Cameroon
 Cameroon
| ISO 3166-1 numeric 120 | ISO 3166-1 alpha-3 CMR | ISO 3166-1 alpha-2 CM | ICAO airport code prefix FK | 
| E.164 code 237 | IOC country code CMR | Country code top-level domain .cm | ICAO aircraft regis. prefix TJ- | 
| E.212 mobile country code 624 | NATO three-letter code CMR | NATO two-letter code CM | LOC MARC code CM | 
| ITU Maritime ID 613 | ITU letter code CME | FIPS country code CM | License plate code CAM | 
| GS1 GTIN prefix 617 | UNDP country code CMR | WMO country code CM | ITU callsign prefixes TJA-TJZ | 
.svg.png.webp) Canada
 Canada
| ISO 3166-1 numeric 124 | ISO 3166-1 alpha-3 CAN | ISO 3166-1 alpha-2 CA | ICAO airport code prefix C | 
| E.164 code 1 | IOC country code CAN | Country code top-level domain .ca | ICAO aircraft regis. prefix C-, CF-, CG- | 
| E.212 mobile country code 302 | NATO three-letter code CAN | NATO two-letter code CA | LOC MARC code CN | 
| ITU Maritime ID 316 | ITU letter code CAN | FIPS country code CA | License plate code CDN | 
| GS1 GTIN prefix 000-139, 754-755 | UNDP country code CAN | WMO country code CN | ITU callsign prefixes CFA-CKZ, CYA-CZZ, VAA-VGZ | 
 Cape Verde
 Cape Verde
| ISO 3166-1 numeric 132 | ISO 3166-1 alpha-3 CPV | ISO 3166-1 alpha-2 CV | ICAO airport code prefix GV | 
| E.164 code 238 | IOC country code CPV | Country code top-level domain .cv | ICAO aircraft regis. prefix D4- | 
| E.212 mobile country code 625 | NATO three-letter code CPV | NATO two-letter code CV | LOC MARC code CV | 
| ITU Maritime ID 617 | ITU letter code CPV | FIPS country code CV | License plate code CV (unofficial) | 
| GS1 GTIN prefix — | UNDP country code CVI | WMO country code CV | ITU callsign prefixes D4A-D4Z | 
 Caribbean Netherlands
 Caribbean Netherlands
| ISO 3166-1 numeric 535 | ISO 3166-1 alpha-3 BES | ISO 3166-1 alpha-2 BQ | ICAO airport code prefix TN | 
| E.164 code 599 | IOC country code — | Country code top-level domain .bq | ICAO aircraft regis. prefix — | 
| E.212 mobile country code — | NATO three-letter code — | NATO two-letter code — | LOC MARC code — | 
| ITU Maritime ID — | ITU letter code — | FIPS country code — | License plate code — | 
| GS1 GTIN prefix — | UNDP country code — | WMO country code — | ITU callsign prefixes PJA-PJZ | 
 Cayman Islands (British territory)
 Cayman Islands (British territory)
| ISO 3166-1 numeric 136 | ISO 3166-1 alpha-3 CYM | ISO 3166-1 alpha-2 KY | ICAO airport code prefix MW | 
| E.164 code 1 | IOC country code CAY | Country code top-level domain .ky | ICAO aircraft regis. prefix VR-C- | 
| E.212 mobile country code 346 | NATO three-letter code CYM | NATO two-letter code CJ | LOC MARC code CJ | 
| ITU Maritime ID 319 | ITU letter code CYM | FIPS country code CJ | License plate code — | 
| GS1 GTIN prefix — | UNDP country code CAY | WMO country code GC | ITU callsign prefixes — | 
 Central African Republic
 Central African Republic
| ISO 3166-1 numeric 140 | ISO 3166-1 alpha-3 CAF | ISO 3166-1 alpha-2 CF | ICAO airport code prefix FE | 
| E.164 code 236 | IOC country code CAF | Country code top-level domain .cf | ICAO aircraft regis. prefix TL- | 
| E.212 mobile country code 623 | NATO three-letter code CAF | NATO two-letter code CT | LOC MARC code CX | 
| ITU Maritime ID 612 | ITU letter code CAF | FIPS country code CT | License plate code RCA | 
| GS1 GTIN prefix — | UNDP country code CAF | WMO country code CE | ITU callsign prefixes TLA-TLZ | 
 Chad
 Chad
| ISO 3166-1 numeric 148 | ISO 3166-1 alpha-3 TCD | ISO 3166-1 alpha-2 TD | ICAO airport code prefix FT | 
| E.164 code 235 | IOC country code CHA | Country code top-level domain .td | ICAO aircraft regis. prefix TT- | 
| E.212 mobile country code 622 | NATO three-letter code TCD | NATO two-letter code CD | LOC MARC code CD | 
| ITU Maritime ID 670 | ITU letter code TCD | FIPS country code CD | License plate code TCH, TD | 
| GS1 GTIN prefix — | UNDP country code CHD | WMO country code CD | ITU callsign prefixes TTA-TTZ | 
 Chile
 Chile
| ISO 3166-1 numeric 152 | ISO 3166-1 alpha-3 CHL | ISO 3166-1 alpha-2 CL | ICAO airport code prefix SC, NE | 
| E.164 code 56 | IOC country code CHI | Country code top-level domain .cl | ICAO aircraft regis. prefix CC- | 
| E.212 mobile country code 730 | NATO three-letter code CHL | NATO two-letter code CI | LOC MARC code CL | 
| ITU Maritime ID 725 | ITU letter code CHL | FIPS country code CI | License plate code RCH | 
| GS1 GTIN prefix 780 | UNDP country code CHI | WMO country code CH | ITU callsign prefixes 3GA-3GZ,CAA-CEZ,XQA-XRZ | 
 China
 China
| ISO 3166-1 numeric 156 | ISO 3166-1 alpha-3 CHN | ISO 3166-1 alpha-2 CN | ICAO airport code prefix ZB, ZG, ZH, ZJ, ZL, ZP, | 
| E.164 code 86 | IOC country code CHN | Country code top-level domain .cn | ICAO aircraft regis. prefix B- | 
| E.212 mobile country code 460, 461 | NATO three-letter code CHN | NATO two-letter code CH | LOC MARC code CC | 
| ITU Maritime ID 412, 413 | ITU letter code CHN | FIPS country code CH | License plate code PRC (unofficial) | 
| GS1 GTIN prefix 690-699 | UNDP country code CPR | WMO country code CI | ITU callsign prefixes 3HA-3UZ,BAA-BZZ,XSA-XSZ | 
Notes
- ↑ RC is Taiwan, VH is Hong Kong, VM is Macao
 Christmas Island (territory of Australia)
 Christmas Island (territory of Australia)
| ISO 3166-1 numeric 162 | ISO 3166-1 alpha-3 CXR | ISO 3166-1 alpha-2 CX | ICAO airport code prefix YP | 
| E.164 code 61 | IOC country code — | Country code top-level domain .cx | ICAO aircraft regis. prefix VH- | 
| E.212 mobile country code 505 | NATO three-letter code CXR | NATO two-letter code KT | LOC MARC code XA | 
| ITU Maritime ID 516 | ITU letter code CHR | FIPS country code KT | License plate code — | 
| GS1 GTIN prefix — | UNDP country code — | WMO country code KI | ITU callsign prefixes — | 
_Islands.svg.png.webp) Cocos (Keeling) Islands (territory of Australia)
 Cocos (Keeling) Islands (territory of Australia)
| ISO 3166-1 numeric 166 | ISO 3166-1 alpha-3 CCK | ISO 3166-1 alpha-2 CC | ICAO airport code prefix — | 
| E.164 code 61 | IOC country code — | Country code top-level domain .cc | ICAO aircraft regis. prefix VH- | 
| E.212 mobile country code 505 | NATO three-letter code CCK | NATO two-letter code CK | LOC MARC code XB | 
| ITU Maritime ID 523 | ITU letter code ICO | FIPS country code CK | License plate code — | 
| GS1 GTIN prefix — | UNDP country code — | WMO country code KK | ITU callsign prefixes — | 
 Colombia
 Colombia
| ISO 3166-1 numeric 170 | ISO 3166-1 alpha-3 COL | ISO 3166-1 alpha-2 CO | ICAO airport code prefix SK | 
| E.164 code 57 | IOC country code COL | Country code top-level domain .co | ICAO aircraft regis. prefix HJ-, HK- | 
| E.212 mobile country code 732 | NATO three-letter code COL | NATO two-letter code CO | LOC MARC code CK | 
| ITU Maritime ID 730 | ITU letter code CLM | FIPS country code CO | License plate code CO | 
| GS1 GTIN prefix 770-771 | UNDP country code COL | WMO country code CO | ITU callsign prefixes 5JA-5KZ, HJA-HKZ | 
 Comoros
 Comoros
| ISO 3166-1 numeric 174 | ISO 3166-1 alpha-3 COM | ISO 3166-1 alpha-2 KM | ICAO airport code prefix FMC | 
| E.164 code 269 | IOC country code COM | Country code top-level domain .km | ICAO aircraft regis. prefix D6- | 
| E.212 mobile country code 654 | NATO three-letter code COM | NATO two-letter code CN | LOC MARC code CQ | 
| ITU Maritime ID 616 | ITU letter code COM | FIPS country code CN | License plate code COM (unofficial) | 
| GS1 GTIN prefix — | UNDP country code COI | WMO country code IC | ITU callsign prefixes D6A-D6Z | 
 Democratic Republic of the Congo
 Democratic Republic of the Congo
| ISO 3166-1 numeric 180 | ISO 3166-1 alpha-3 COD | ISO 3166-1 alpha-2 CD | ICAO airport code prefix FZ | 
| E.164 code 243 | IOC country code COD | Country code top-level domain .cd | ICAO aircraft regis. prefix 9Q- | 
| E.212 mobile country code 630 | NATO three-letter code COD | NATO two-letter code CG | LOC MARC code CG | 
| ITU Maritime ID 676 | ITU letter code COD | FIPS country code CG | License plate code ZRE | 
| GS1 GTIN prefix — | UNDP country code | WMO country code ZR | ITU callsign prefixes 9OA-9TZ | 
Notes
- ↑ formerly Zaire (1997)
 Republic of the Congo
 Republic of the Congo
| ISO 3166-1 numeric 178 | ISO 3166-1 alpha-3 COG | ISO 3166-1 alpha-2 CG | ICAO airport code prefix FC | 
| E.164 code 242 | IOC country code CGO | Country code top-level domain .cg | ICAO aircraft regis. prefix TN- | 
| E.212 mobile country code 629 | NATO three-letter code COG | NATO two-letter code CF | LOC MARC code CF | 
| ITU Maritime ID 615 | ITU letter code COG | FIPS country code CF | License plate code RCB | 
| GS1 GTIN prefix — | UNDP country code | WMO country code CG | ITU callsign prefixes TNA-TNZ | 
Notes
- ↑ formerly People's Republic of Congo (1970–1992)
 Cook Islands (associated with New Zealand)
 Cook Islands (associated with New Zealand)
| ISO 3166-1 numeric 184 | ISO 3166-1 alpha-3 COK | ISO 3166-1 alpha-2 CK | ICAO airport code prefix NC | 
| E.164 code 682 | IOC country code COK | Country code top-level domain .ck | ICAO aircraft regis. prefix — | 
| E.212 mobile country code 548 | NATO three-letter code COK | NATO two-letter code CW | LOC MARC code CW | 
| ITU Maritime ID 518 | ITU letter code CKH | FIPS country code CW | License plate code COK (unofficial) | 
| GS1 GTIN prefix — | UNDP country code CKI | WMO country code KU | ITU callsign prefixes E5A-E5Z | 
 Costa Rica
 Costa Rica
| ISO 3166-1 numeric 188 | ISO 3166-1 alpha-3 CRI | ISO 3166-1 alpha-2 CR | ICAO airport code prefix MR | 
| E.164 code 506 | IOC country code CRC | Country code top-level domain .cr | ICAO aircraft regis. prefix TI- | 
| E.212 mobile country code 712 | NATO three-letter code CRI | NATO two-letter code CS | LOC MARC code CR | 
| ITU Maritime ID 321 | ITU letter code CTR | FIPS country code CS | License plate code CR | 
| GS1 GTIN prefix 744 | UNDP country code COS | WMO country code CS | ITU callsign prefixes TEA-TEZ, TIA-TIZ | 
 Croatia
 Croatia
| ISO 3166-1 numeric 191 | ISO 3166-1 alpha-3 HRV | ISO 3166-1 alpha-2 HR | ICAO airport code prefix LD | 
| E.164 code 385 | IOC country code CRO | Country code top-level domain .hr | ICAO aircraft regis. prefix 9A- | 
| E.212 mobile country code 219 | NATO three-letter code HRV | NATO two-letter code HR | LOC MARC code CI | 
| ITU Maritime ID 238 | ITU letter code HRV | FIPS country code HR | License plate code HR | 
| GS1 GTIN prefix 385 | UNDP country code CRO | WMO country code HR | ITU callsign prefixes 9AA-9AZ | 
 Cuba
 Cuba
| ISO 3166-1 numeric 192 | ISO 3166-1 alpha-3 CUB | ISO 3166-1 alpha-2 CU | ICAO airport code prefix MU | 
| E.164 code 53 | IOC country code CUB | Country code top-level domain .cu | ICAO aircraft regis. prefix CU- | 
| E.212 mobile country code 368 | NATO three-letter code CUB | NATO two-letter code CU | LOC MARC code CU | 
| ITU Maritime ID 323 | ITU letter code CUB | FIPS country code CU | License plate code CU | 
| GS1 GTIN prefix 850 | UNDP country code CUB | WMO country code CU | ITU callsign prefixes CLA-CMZ,COA-COZ,T4A-T4Z | 
 Curaçao (Kingdom of the Netherlands)
 Curaçao (Kingdom of the Netherlands)
| ISO 3166-1 numeric 531 | ISO 3166-1 alpha-3 CUW | ISO 3166-1 alpha-2 CW | ICAO airport code prefix TN | 
| E.164 code 599 | IOC country code — | Country code top-level domain .cw | ICAO aircraft regis. prefix PJ | 
| E.212 mobile country code 362 | NATO three-letter code — | NATO two-letter code — | LOC MARC code NA | 
| ITU Maritime ID 306 | ITU letter code CUW | FIPS country code — | License plate code — | 
| GS1 GTIN prefix — | UNDP country code — | WMO country code NU | ITU callsign prefixes PJA-PJZ | 
 Cyprus
 Cyprus
| ISO 3166-1 numeric 196 | ISO 3166-1 alpha-3 CYP | ISO 3166-1 alpha-2 CY | ICAO airport code prefix LC | 
| E.164 code 357 | IOC country code CYP | Country code top-level domain .cy | ICAO aircraft regis. prefix 5B- | 
| E.212 mobile country code 280 | NATO three-letter code CYP | NATO two-letter code CY | LOC MARC code CY | 
| ITU Maritime ID 209, 210, 212 | ITU letter code CYP | FIPS country code CY | License plate code CY | 
| GS1 GTIN prefix 529 | UNDP country code CYP | WMO country code CY | ITU callsign prefixes 5BA-5BZ, C4A-C4Z | 
 Czech Republic
 Czech Republic
| ISO 3166-1 numeric 203 | ISO 3166-1 alpha-3 CZE | ISO 3166-1 alpha-2 CZ | ICAO airport code prefix LK | 
| E.164 code 420 | IOC country code CZE | Country code top-level domain .cz | ICAO aircraft regis. prefix OK- | 
| E.212 mobile country code 230 | NATO three-letter code CZE | NATO two-letter code CZ | LOC MARC code XR | 
| ITU Maritime ID 270 | ITU letter code CZE | FIPS country code EZ | License plate code CZ | 
| GS1 GTIN prefix 859 | UNDP country code CEH | WMO country code CZ | ITU callsign prefixes OKA-OLZ |