word | | Currency (code) |
| XAF | Congo, Republic of the | Communaute Financiere Africaine franc (XAF); note - responsible authority is the Bank of the Central African States |
| XAF | Equatorial Guinea | Communaute Financiere Africaine franc (XAF); note - responsible authority is the Bank of the Central African States |
| XAF | Gabon | Communaute Financiere Africaine franc (XAF); note - responsible authority is the Bank of the Central African States |
| XCD | Anguilla | East Caribbean dollar (XCD) |
| XCD | Antigua and Barbuda | East Caribbean dollar (XCD) |
| XCD | Dominica | East Caribbean dollar (XCD) |
| XCD | Grenada | East Caribbean dollar (XCD) |
| XCD | Montserrat | East Caribbean dollar (XCD) |
| XCD | Saint Kitts and Nevis | East Caribbean dollar (XCD) |
| XCD | Saint Lucia | East Caribbean dollar (XCD) |
| XCD | Saint Vincent and the Grenadines | East Caribbean dollar (XCD) |
| XOF | Benin | Communaute Financiere Africaine franc (XOF); note - responsible authority is the Central Bank of the West African States |
| XOF | Burkina Faso | Communaute Financiere Africaine franc (XOF); note - responsible authority is the Central Bank of the West African States |
| XOF | Guinea-Bissau | Communaute Financiere Africaine franc (XOF); note - responsible authority is the Central Bank of the West African States |
| XOF | Mali | Communaute Financiere Africaine franc (XOF); note - responsible authority is the Central Bank of the West African States |
| XOF | Niger | Communaute Financiere Africaine franc (XOF); note - responsible authority is the Central Bank of the West African States (BCEAO) |
| XOF | Senegal | Communaute Financiere Africaine franc (XOF); note - responsible authority is the Central Bank of the West African States |
| XOF | Togo | Communaute Financiere Africaine franc (XOF); note - responsible authority is the Central Bank of the West African States |
| XPF | French Polynesia | Comptoirs Francais du Pacifique franc (XPF) |
| XPF | New Caledonia | Comptoirs Francais du Pacifique franc (XPF) |
| XPF | Wallis and Futuna | Comptoirs Francais du Pacifique franc (XPF) |
| Yemeni | Yemen | Yemeni rial (YER) |
| yen | Japan | yen (JPY) |
| YER | Yemen | Yemeni rial (YER) |
| yuan | China | Renminbi (RMB); note - also referred to by the unit yuan (CNY) |
| Zambian | Zambia | Zambian kwacha (ZMK) |
| ZAR | Lesotho | loti (LSL); South African rand (ZAR) |
| ZAR | Namibia | Namibian dollar (NAD); South African rand (ZAR) |
| ZAR | South Africa | rand (ZAR) |
| Zimbabwean | Zimbabwe | Zimbabwean dollar (ZWD) |
| zloty | 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 |
| zloty | Poland | zloty (PLN) |
| ZMK | Zambia | Zambian kwacha (ZMK) |