From these codes: ISO 3166-1 alpha-3 (see also Wikipedia:WikiProject Flag Template)

Flags and country names can be generated, by using these tags:

{{ABW}}  Aruba

{{AFG}}  Afghanistan

{{AGO}}  Angola

{{AIA}}  Anguilla

{{ALA}}  Åland Islands

{{ALB}}  Albania

{{AND}}  Andorra

{{ANT}}  Netherlands Antilles

{{ARE}}  United Arab Emirates

{{ARG}}  Argentina

{{ARM}}  Armenia

{{ASM}}  American Samoa

{{ATA}}  Antarctica

{{ATF}}  French Southern and Antarctic Lands

{{ATG}}  Antigua and Barbuda

{{AUS}}  Australia

{{AUT}}  Austria

{{AZE}}  Azerbaijan

{{BDI}}  Burundi

{{BEL}}  Belgium

{{BEN}}  Benin

{{BFA}}  Burkina Faso

{{BGD}}  Bangladesh

{{BGR}}  Bulgaria

{{BHR}}  Bahrain

{{BHS}}  Bahamas

{{BIH}}  Bosnia and Herzegovina

{{BLR}}  Belarus

{{BLZ}}  Belize

{{BMU}}  Bermuda

{{BOL}}  Bolivia

{{BRA}}  Brazil

{{BRB}}  Barbados

{{BRN}}  Brunei

{{BTN}}  Bhutan

{{BVT}}  Bouvet Island

{{BWA}}  Botswana

{{CAF}}  Central African Republic

{{CAN}}  Canada

[[Cocos (Keeling) Islands]] Cocos (Keeling) Islands

{{CHE}}  Switzerland

{{CHL}}  Chile

{{CHN}}  China

{{CIV}}  Ivory Coast

{{CMR}}  Cameroon

{{COD}}  Democratic Republic of the Congo

{{COG}}  Republic of the Congo

{{COK}}  Cook Islands

{{COL}}  Colombia

{{COM}}  Comoros

{{CPV}}  Cape Verde

{{CRI}}  Costa Rica

{{CUB}}  Cuba

{{CXR}}  Christmas Island

{{CYM}}  Cayman Islands

{{CYP}}  Cyprus

{{CZE}}  Czech Republic

{{DEU}}  Germany

{{DJI}}  Djibouti

{{DMA}}  Dominica

{{DNK}}  Denmark

{{DOM}}  Dominican Republic

{{DZA}}  Algeria

{{ECU}}  Ecuador

{{EGY}}  Egypt

{{ERI}}  Eritrea

{{ESH}}  Western Sahara

{{ESP}}  Spain

{{EST}}  Estonia

{{ETH}}  Ethiopia

{{FIN}}  Finland

{{FJI}}  Fiji

{{FLK}}  Falkland Islands

{{FRA}}  France

{{FRO}}  Faroe Islands

{{FSM}}  Federated States of Micronesia

{{GAB}}  Gabon

{{GBR}}  United Kingdom

{{GEO}}  Georgia

{{GGY}}  Guernsey

{{GHA}}  Ghana

{{GIB}}  Gibraltar

{{GIN}}  Guinea

{{GLP}}  Guadeloupe

{{GMB}}  Gambia

{{GNB}}  Guinea-Bissau

{{GNQ}}  Equatorial Guinea

{{GRC}}  Greece

{{GRD}}  Grenada

{{GRL}}  Greenland

{{GTM}}  Guatemala

{{GUF}}  French Guiana

{{GUM}}  Guam

{{GUY}}  Guyana

{{HKG}}  Hong Kong

{{HMD}}  Heard Island and McDonald Islands

{{HND}}  Honduras

{{HRV}}  Croatia

{{HTI}}  Haiti

{{HUN}}  Hungary

{{IDN}}  Indonesia

{{IMN}}  Isle of Man

{{IND}}  India

{{IOT}}  British Indian Ocean Territory

{{IRL}}  Ireland

{{IRN}}  Iran

{{IRQ}}  Iraq

{{ISL}}  Iceland

{{ISR}}  Israel

{{ITA}}  Italy

{{JAM}}  Jamaica

{{JEY}}  Jersey

{{JOR}}  Jordan

{{JPN}}  Japan

{{KAZ}}  Kazakhstan

{{KEN}}  Kenya

{{KGZ}}  Kyrgyzstan

{{KHM}}  Cambodia

{{KIR}}  Kiribati

{{KNA}}  Saint Kitts and Nevis

{{KOR}}  South Korea

{{KWT}}  Kuwait

{{LAO}}  Laos

{{LBN}}  Lebanon

{{LBR}}  Liberia

{{LBY}}  Libya

{{LCA}}  Saint Lucia

{{LIE}}  Liechtenstein

{{LKA}}  Sri Lanka

{{LSO}}  Lesotho

{{LTU}}  Lithuania

{{LUX}}  Luxembourg

{{LVA}}  Latvia

{{MAC}}  Macau

{{MAR}}  Morocco

{{MCO}}  Monaco

{{MDA}}  Moldova

{{MDG}}  Madagascar

{{MDV}}  Maldives

{{MEX}}  Mexico

{{MHL}}  Marshall Islands

{{MKD}}  North Macedonia

{{MLI}}  Mali

{{MLT}}  Malta

{{MMR}}  Myanmar

{{MNE}}  Montenegro

{{MNG}}  Mongolia

{{MNP}}  Northern Mariana Islands

{{MOZ}}  Mozambique

{{MRT}}  Mauritania

{{MSR}}  Montserrat

{{MTQ}}  Martinique

{{MUS}}  Mauritius

{{MWI}}  Malawi

{{MYS}}  Malaysia

{{MYT}}  Mayotte

{{NAM}}  Namibia

{{NCL}}  New Caledonia

{{NER}}  Niger

{{NFK}}  Norfolk Island

{{NGA}}  Nigeria

{{NIC}}  Nicaragua

{{NIU}}  Niue

{{NLD}}  Netherlands

{{NOR}}  Norway

{{NPL}}  Nepal

{{NRU}}  Nauru

{{NZL}}  New Zealand

{{OMN}}  Oman

{{PAK}}  Pakistan

{{PAN}}  Panama

{{PCN}}  Pitcairn Islands

{{PER}}  Peru

{{PHL}}  Philippines

{{PLW}}  Palau

{{PNG}}  Papua New Guinea

{{POL}}  Poland

{{PRI}}  Puerto Rico

{{PRK}}  North Korea

{{PRT}}  Portugal

{{PRY}}  Paraguay

{{PSE}}  Palestine

{{PYF}}  French Polynesia

{{QAT}}  Qatar

{{REU}}  Réunion

{{ROU}}  Romania

{{RUS}}  Russia

{{RWA}}  Rwanda

{{SAU}}  Saudi Arabia

{{SDN}}  Sudan

{{SEN}}  Senegal

{{SGP}}  Singapore

{{SGS}}  South Georgia and the South Sandwich Islands

{{SHN}}  Saint Helena, Ascension and Tristan da Cunha

{{SJM}}  Svalbard and Jan Mayen

{{SLB}}  Solomon Islands

{{SLE}}  Sierra Leone

{{SLV}}  El Salvador

{{SMR}}  San Marino

{{SOM}}  Somalia

{{SPM}}  Saint Pierre and Miquelon

{{SRB}}  Serbia

{{STP}}  São Tomé and Príncipe

{{SUR}}  Suriname

{{SVK}}  Slovakia

{{SVN}}  Slovenia

{{SWE}}  Sweden

{{SWZ}}  Eswatini

{{SYC}}  Seychelles

{{SYR}}  Syria

{{TCA}}  Turks and Caicos Islands

{{TCD}}  Chad

{{TGO}}  Togo

{{THA}}  Thailand

{{TJK}}  Tajikistan

{{TKL}}  Tokelau

{{TKM}}  Turkmenistan

{{TLS}}  Timor-Leste

{{TON}}  Tonga

{{TTO}}  Trinidad and Tobago

{{TUN}}  Tunisia

{{TUR}}  Turkey

{{TUV}}  Tuvalu

{{TWN}}  Taiwan

{{TZA}}  Tanzania

{{UGA}}  Uganda

{{UKR}}  Ukraine

{{UMI}}  United States Minor Outlying Islands

{{URY}}  Uruguay

{{USA}}  United States

{{UZB}}  Uzbekistan

{{VAT}}  Vatican City

{{VCT}}  Saint Vincent and the Grenadines

{{VEN}}  Venezuela

{{VGB}}  British Virgin Islands

{{VIR}}  United States Virgin Islands

{{VNM}}  Vietnam

{{VUT}}  Vanuatu

{{WLF}}  Wallis and Futuna

{{WSM}}  Samoa

{{YEM}}  Yemen

{{ZAF}}  South Africa

{{ZMB}}  Zambia

{{ZWE}}  Zimbabwe