| Afghanistan | Affganistan |
| Åland Islands | Åland |
| Albania | Albania |
| Algeria | Algeria |
| American Samoa | Samoa America |
| Andorra | Andorra |
| Angola | Angola |
| Anguilla | Anguilla |
| Antarctica | Yr Antarctig |
| Antigua and Barbuda | Antigwa a Barbiwda |
| Argentina | Ariannin |
| Armenia | Armenia |
| Australia | Awstralia |
| Austria | Awstria |
| Azerbaijan | Aserbaijan |
| Bahamas | Y Bahamas |
| Bahrain | Bahrein |
| Bangladesh | Bangladesh |
| Barbados | Barbados |
| Belarus | Belarws |
| Belgium | Gwlad Belg |
| Belize | Belîs |
| Benin | Benin |
| Bermuda | Bermwda |
| Bhutan | Bhwtan |
| Bolivia | Bolifia |
| Bosnia and Herzegovina | Bosnia a Hertsegofina |
| Botswana | Botswana |
| Brazil | Brasil |
| British Indian Ocean Territory | Tiriogaeth Brydeinig Cefnfor India |
| British Virgin Islands | Ynysoedd Prydeinig y Wyryf |
| Brunei | Brwnei |
| Bulgaria | Bwlgaria |
| Burkina Faso | Bwrcina Ffaso |
| Burundi | Bwrwndi |
| Cambodia | Cambodia |
| Cameroon | Camerŵn |
| Canada | Canada |
| Cape Verde | Cabo Verde |
| Cayman Islands | Ynysoedd Cayman |
| Central African Republic | Gweriniaeth Canolbarth Affrica |
| Chad | Tchad |
| Chile | Chile |
| China | Tsieina |
| Christmas Island | Ynys y Nadolig |
| Cocos (Keeling) Islands | Ynysoedd Cocos [Keeling] |
| Colombia | Colombia |
| Comoros | Y Comoros |
| Congo-Brazzaville | Gweriniaeth y Congo |
| Cook Islands | Ynysoedd Cook |
| Costa Rica | Costa Rica |
| Côte d'Ivoire | Côte d'Ivoire |
| Croatia | Croatia |
| Cuba | Cuba |
| Curacao | Cwracao |
| Cyprus | Cyprus |
| Czechia | Gweriniaeth Tsiec |
| Democratic Republic of the Congo | Gweriniaeth Ddemocrataidd Congo |
| Denmark | Denmarc |
| Djibouti | Djibouti |
| Dominican Republic | Gweriniaeth Dominica |
| East Timor | Dwyrain Timor |
| Ecuador | Ecuador |
| Egypt | Yr Aifft |
| El Salvador | El Salvador |
| Equatorial Guinea | Gini Gyhydeddol |
| Eritrea | Eritrea |
| Estonia | Estonia |
| Eswatini | Eswatini |
| Ethiopia | Ethiopia |
| European Union | Yr Undeb Ewropeaidd |
| Falkland Islands | Ynysoedd Falkland |
| Faroe Islands | Føroyar |
| Federated States of Micronesia | Taleithiau Ffederal Micronesia |
| Fiji | Fiji |
| Finland | Y Ffindir |
| France | Ffrainc |
| France (land mass) | Ffrainc |
| French Guiana | Guyane |
| French Guiana | Guyane |
| French Polynesia | Polynesia Ffrengig |
| French Southern and Antarctic Lands | Tiriogaethau Ffrengig y De |
| Gabon | Gabon |
| Georgia | Georgia |
| Germany | Yr Almaen |
| Ghana | Ghana |
| Gibraltar | Gibraltar |
| Greece | Gwlad Groeg |
| Greenland | Yr Ynys Las |
| Guatemala | Guatemala |
| Guernsey | Ynys y Garn |
| Guinea | Guinée |
| Guinea-Bissau | Guiné-Bissau |
| Guyana | Guyana |
| Haiti | Haiti |
| Honduras | Honduras |
| Hong Kong | Hong Cong |
| Hungary | Hwngari |
| Iceland | Gwlad yr Iâ |
| India | India |
| Indonesia | Indonesia |
| Iran | Iran |
| Iraq | Irac |
| Ireland | Iwerddon |
| Isle of Man | Ynys Manaw |
| Israel | Israel |
| Italy | Yr Eidal |
| Japan | Japan |
| Jersey | Jersey |
| Jordan | Gwlad yr Iorddonen |
| Kazakhstan | Kazakstan |
| Kenya | Kenya |
| Kosovo | Kosovo |
| Kuwait | Kuwait |
| Kyrgyzstan | Kyrgyzstan |
| Laos | Laos |
| Latvia | Latfia |
| Lebanon | Libanus |
| Lesotho | Lesotho |
| Liberia | Liberia |
| Libya | Libya |
| Lithuania | Lithwania |
| Luxembourg | Lwcsembwrg |
| Macau | Macau |
| Madagascar | Madagascar |
| Malawi | Malawi |
| Malaysia | Malaysia |
| Mali | Mali |
| Marshall Islands | Ynysoedd Marshall |
| Mauritania | Mauritania |
| Mauritius | Mawrisiws |
| Mexico | Mecsico |
| Moldova | Moldofa |
| Monaco | Monaco |
| Monaco | Monaco |
| Mongolia | Mongolia |
| Montenegro | Montenegro |
| Montserrat | Montserrat |
| Morocco | Moroco |
| Mozambique | Mozambique |
| Myanmar | Myanmar |
| Namibia | Namibia |
| Nauru | Nawrw |
| Nepal | Nepal |
| Netherlands | Yr Iseldiroedd |
| New Caledonia | Caledonia Newydd |
| New Zealand | Seland Newydd |
| Nicaragua | Nicaragua |
| Niger | Niger |
| Nigeria | Nigeria |
| Norfolk Island | Ynys Norfolk |
| North Korea | Gogledd Korea |
| North Macedonia | Gogledd Macedonia |
| Norway | Norwy |
| Oman | Oman |
| Pakistan | Pacistan |
| Panama | Panama |
| Papua New Guinea | Papua Guinea Newydd |
| Paraguay | Paraguay |
| Peru | Periw |
| Philippines | Ynysoedd Philippines |
| Pitcairn Islands | Ynysoedd Pitcairn, Henderson, Ducie ac Oeno |
| Poland | Gwlad Pwyl |
| Portugal | Portiwgal |
| Qatar | Qatar |
| Réunion | Réunion |
| Réunion | Réunion |
| Réunion | Réunion |
| Romania | Rwmania |
| Russia | Rwsia |
| Rwanda | Rwanda |
| Saint Barthélemy | Saint Barthélemy |
| Saint Helena, Ascension and Tristan da Cunha | Saint Helena, Ascension a Tristan da Cunha |
| Saint Kitts and Nevis | Saint Kitts a Nevis |
| Saint Martin (France) | Saint Martin (Ffrainc) |
| Saint Pierre and Miquelon | Saint Pierre a Miquelon |
| Saint Pierre and Miquelon (land mass) | Saint Pierre a Miquelon |
| Saint Vincent and the Grenadines | Saint Vincent a'r Grenadines |
| São Tomé and Príncipe | São Tomé a Príncipe |
| Saudi Arabia | Saudi Arabia |
| Senegal | Sénégal |
| Serbia | Serbia |
| Serbia | Serbia |
| Seychelles | Seychelles |
| Sierra Leone | Sierra Leone |
| Singapore | Singapore |
| Slovakia | Slofacia |
| Slovenia | Slofenia |
| Solomon Islands | Ynysoedd Solomon |
| Somalia | Somalia |
| South Africa | De Affrica |
| South Africa (land mass) | De Affrica |
| South Georgia and the South Sandwich Islands | De Georgia ac Ynysoedd Sandwich y De |
| South Korea | De Korea |
| South Sudan | De Sudan |
| Spain | Sbaen |
| Sri Lanka | Sri Lanka |
| Sudan | Sudan |
| Suriname | Swrinam |
| Sweden | Sweden |
| Switzerland | Y Swistir |
| Syria | Syria |
| Syria | Syria |
| Taiwan | Taiwan |
| Tajikistan | Tajikistan |
| Tanzania | Tanzania |
| Thailand | Gwlad Thai |
| The Gambia | Y Gambia |
| Togo | Togo |
| Tonga | Tonga |
| Trinidad and Tobago | Trinidad a Tobago |
| Tunisia | Tunisia |
| Turkey | Twrci |
| Turkmenistan | Turkmenistan |
| Turks and Caicos Islands | Ynysoedd Turks a Caicos |
| Tuvalu | Twfalw |
| Uganda | Uganda |
| Ukraine | Wcráin |
| United Arab Emirates | Yr Emiradau Arabaidd Unedig |
| United Kingdom | Y Deyrnas Unedig |
| United States | Unol Daleithiau America |
| Uruguay | Uruguay |
| Uzbekistan | Uzbekistan |
| Vatican City | Dinas y Fatican |
| Venezuela | Venezuela |
| Vietnam | Fietnam |
| Wallis and Futuna | Wallis a Futuna |
| Western Sahara | Gorllewin Sahara |
| Yemen | Yemen |
| Zambia | Zambia |
| Zimbabwe | Zimbabwe |