| Country | Currency (code) |
| Clipperton Island | void |
| Cocos (Keeling) Islands | Australian dollar (AUD) |
| Colombia | Colombian peso (COP) |
| Comoros | Comoran franc (KMF) |
| Congo, Democratic Republic of the | Congolese franc (CDF) |
| Congo, Republic of the | Communaute Financiere Africaine franc (XAF); note - responsible authority is the Bank of the Central African States |
| Cook Islands | NZ dollar (NZD) |
| Coral Sea Islands | void |
| Costa Rica | Costa Rican colon (CRC) |
| Cote d'Ivoire | Communaute Financiere Africaine franc (XOF); note - responsible authority is the Central Bank of the West African States |
| Croatia | kuna (HRK) |
| Cuba | Cuban peso (CUP) and Convertible peso (CUC) |
| Cyprus | Cypriot pound (CYP); euro (EUR) after 1 January 2008 |
| Czech Republic | Czech koruna (CZK) |
| Denmark | Danish krone (DKK) |
| Dhekelia | euro (EUR) adopted 1 January 2008; note - the Cypriot pound (CYP) formerly used |
| Djibouti | Djiboutian franc (DJF) |
| Dominica | East Caribbean dollar (XCD) |
| Dominican Republic | Dominican peso (DOP) |
| Ecuador | US dollar (USD) |
| Egypt | Egyptian pound (EGP) |
| El Salvador | US dollar (USD) |
| Equatorial Guinea | Communaute Financiere Africaine franc (XAF); note - responsible authority is the Bank of the Central African States |
| Eritrea | nakfa (ERN) |
| Estonia | Estonian kroon (EEK) |
| Ethiopia | birr (ETB) |
| European Union | euro, British pound, Bulgarian lev, Czech koruna, Danish krone, Estonian kroon, Hungarian forint, Latvian lat, Lithuanian litas, Polish zloty, Romanian leu, Slovak koruna, Swedish krona |
| Falkland Islands (Islas Malvinas) | Falkland pound (FKP) |
| Faroe Islands | Danish krone (DKK) |
| Fiji | Fijian dollar (FJD) |
| Finland | euro (EUR) |
| France | euro (EUR) |
| French Polynesia | Comptoirs Francais du Pacifique franc (XPF) |
| French Southern and Antarctic Lands | void |
| Gabon | Communaute Financiere Africaine franc (XAF); note - responsible authority is the Bank of the Central African States |
| Gambia, The | dalasi (GMD) |
| Gaza Strip | new Israeli shekel (ILS) |
| Georgia | lari (GEL) |
| Germany | euro (EUR) |
| Ghana | Ghana cedi (GHC) |
| Gibraltar | Gibraltar pound (GIP) |
| Greece | euro (EUR) |
| Greenland | Danish krone (DKK) |
| Grenada | East Caribbean dollar (XCD) |
| Guam | US dollar (USD) |
| Guatemala | quetzal (GTQ), US dollar (USD), others allowed |
| Guernsey | Guernsey pound note: the British pound is also legal tender |
| Guinea | Guinean franc (GNF) |
| Guinea-Bissau | Communaute Financiere Africaine franc (XOF); note - responsible authority is the Central Bank of the West African States |