• Official State of Texas homepage
• Office of the Texas Secretary of State

• Flags of the World (FIAV member based in Canada)
• World Flag Database

Canada

• CFA Canadian Flag Association | L'Association canadienne de vexillologie
• NAVA North American Vexillological Association

United States

• CBFA Chesapeake Bay Flag Association
• FRC Flag Research Center
• GWAV Great Waters Association of Vexillology
• NFF National Flag Foundation
• NEVA New England Vexillological Association

Angola

• SAVA Southern African Vexillological Association

Argentina

• CIDEC Fundación Centro Interdisciplinaro de Estudios Culturales

Australia

• FSA Flag Society of Australia Inc.

Botswana

• SAVA Southern African Vexillological Association

Croatia

• HGZD Hrvatsko grboslovno i zastavoslovno društvo | Croatian Heraldic and Vexillologic Association

Czech Republic

• CVS Česká vexilologická společnost o. s.
• SVI Středisko vexilologických informací | Flag Data Centre

Denmark

• NF Nordisk Flaggselskap | Nordisk Flagselskab | Nordiska Flaggsällskapet | Norræna Fánafélagið | Pohjoismaiden Lippuseura

Finland

• NF Nordisk Flaggselskap | Nordisk Flagselskab | Nordiska Flaggsällskapet | Norræna Fánafélagið | Pohjoismaiden Lippuseura
• PH Partioheraldikot r.y.

France

• KVV Kevarzhe Vannielouriezh Vreizh | Société Bretonne de Vexillologie
• SFV Société française de vexillologie

Georgia

• SCHG State Council of Heraldry at the Parliament of Georgia

Germany

• DGF Deutsche Gesellschaft für Flaggenkunde e.V.
• HVK Heraldischer Verein “Zum Kleeblatt” von 1888 zu Hannover e.V.

Iceland

• NF Nordisk Flaggselskap | Nordisk Flagselskab | Nordiska Flaggsällskapet | Norræna Fánafélagið | Pohjoismaiden Lippuseura

Italy

• CISV Centro Italiano Studi Vessillologici

Lesotho

• SAVA Southern African Vexillological Association

Macedonia

• MHZ Македонско Хералдичко Здружение | Makedonsko Heraldičko Združenie / Macedonian Heraldry Society

Madagascar

• SAVA Southern African Vexillological Association

Malawi

• SAVA Southern African Vexillological Association

Mozambique

• SAVA Southern African Vexillological Association

Namibia

• SAVA Southern African Vexillological Association

The Netherlands

• NVvV Nederlandse Vereniging voor Vlaggenkunde
• SVN Stichting Vlaggenmuseum Nederland
• SVPR Stichting Vlaggenparade Rotterdam

Norway

• NF Nordisk Flaggselskap | Nordisk Flagselskab | Nordiska Flaggsällskapet | Norræna Fánafélagið | Pohjoismaiden Lippuseura

Poland

• IHW Instytut Heraldyczno-Weksylologiczny
• PTW Polskie Towarzystwo Weksylologiczne

Russia

• RCVH Российский Центр флаговедения и геральдики | Russian Centre of Vexillology and Heraldry

South Africa

• SAVA Southern African Vexillological Association

Spain

• ACV Associació Catalana de Vexil•lología
• SEV Sociedad Española de Vexilología

Swaziland

• SAVA Southern African Vexillological Association

Sweden

• NF Nordisk Flaggselskap | Nordisk Flagselskab | Nordiska Flaggsällskapet | Norræna Fánafélagið | Pohjoismaiden Lippuseura

Switzerland

• SSV Schweizerische Gesellschaft für Fahnen- und Flaggenkunde | Sociétée Suisse de Veillologie | Società Svizzera di Vessillologia

Ukraine

• UHT Ukrayins'ke Heral'dychne Tovarystvo | The Ukrainian Heraldry Society

United Kingdom

• FI The Flag Institute

Zambia

• SAVA Southern African Vexillological Association

Zimbabwe

• SAVA Southern African Vexillological Association