If you are interested in creating this list please add the ones you know here:
International
* FIT - Fédeacute;ration Internationale des Traducteurs
* LISA - Localisation Industry Standards Association
* AIIC - International Association of Conference Interpreters
* TAALS - The American Association of Language Specialists (international organization)
* EIZIE - Association of Translators, Correctors and Interpreters of Basque Language
* EST - European Society for Translation Studies
* CIUTI - Confeacute;rence internationale permanente d'instituts universitaires de traducteurs et interprètes
* EÜK - Europäisches Übersetzer-Kollegium Nordrhein-Westfalen in Straelen
Argentina
* AATI - Asociación Argentina de Traductores e Intérpretes
* CTPCBA - Colegio de Traductores Públicos de la Ciudad de Buenos Aires
Australia
* AUSIT - Australian Institute of Interpreters and Translators
Austria
* Österreichische Übersetzer- und Dolmetscherverband
* ÖVGD - Österreichische Verband der Gerichtsdolmetscher
Belgium
* CBTIP/BKVTF - Chambre belge des traducteurs, interprètes et philologues
Brazil
* SINTRA - Sindicato Nacional dos Tradutores
Canada
* CTIC - Canadian Translators and Interpreters Council
* LTAC/ATTLC - Literary Translators' Association of Canada
* RTE/NTE - Network of Translators in Education
* AVLIC - Association of Visual Language Interpreters of Canada
* ATIA - Association of Translators and Interpreters of Alberta
* STIBC - Society of Translators and Interpreters of British Columbia
* ATIM - Association of Translators and Interpreters of Manitoba
* ATINS - Association of Translators and Interpreters of Nova Scotia
* ATIO - Association of Translators and Interpreters of Ontario
* OTIAQ - Ordre des traducteurs et interprètes agréés du Québec
* ATIS - Association of Translators and Interpreters of Saskatchewan
France
* SFT - Société française des traducteurs
* ATLF - Association des traducteurs littéraires de France
* AAE-ESIT - Association des Anciens Elèves de l'Ecole Supérieure d'Interprètes et de Traducteurs de l'Université de Paris.
Germany
* BDÜ - Bundesverband der Dolmetscher und Übersetzer
* ATICOM - Association of Professional Freelance Translators and Interpreters, Germany
* ADÜ Nord - Assoziierte Dolmetscher und Übersetzer in Norddeutschland e.V.
Ireland
* ITIA - Irish Translators' & Interpreters' Association
Italy
* AITI - Associazione Italiana Traduttori e Interpreti
Japan
* JAT - The Japan Association of Translators
Netherlands
* NGTV - Nederlands Genootschap van Tolken en Vertalers
* NBTG - Nederlandse Beroepsvereniging Tolken Gebarentaal
* Stichting Vertalersforum
* Stichting Vrouwennetwerk Vertalers en Tolken
* VZV - Vereniging Zelfstandige Vertalers
* VSenV - Vereniging van Schrijvers en Vertalers
* MetaCom - Nederlandse federatie voor meertalige communicatie
* ATA - Dutch Association of Translation Agencies
* OVIN - Organisatie van Vertaalbureaus in Nederland
* SENSE - Society of English-Native-Speaking Editors working in the Netherlands
Norway
* The Norwegian Association of Literary Translators
Peru
* ATPP - Asociación de Traductores Profesionales del Perú
Portugal
* APT - Associação Portuguesa de Traductores
* ATeLP - Associação de Tradução em Língua Portuguesa
Slovenia
* DZTPS - Association of Scientific and Technical Translators of Slovenia
South Africa
* SATI - South African Translators' Institute
Spain
* APETI - Asociación Española de Traductores e Intérpretes
* ATIC - Associació de Traductors i d'Intèrprets de Catalunya
* ACEtt - Spanish association of literary translators
Switzerland
* ASTTI - Swiss Association of Translators, Terminologists and Interpreters
UK
* ITI - Institute of Translation and Interpreting
* IoL - Institute of Linguists
* LLT - British Centre for Literary Translation
US
* ATA - American Translators Association
* ALTA - American Association of Literary Translators
* NAJIT - National Organization of Judiciary Interpreters and Translators
* RID - Registry of Interpreters for the Deaf
* TTIG - The Translators and Interpreters Guild
* AAIT - Atlanta Association of Interpreters and Translators
* AATIA - Austin Area Translators and Interpreters Association
* CCIA - California Court Interpreters Association
* CATI - Carolina Association of Translators and Interpreters
* CTA - Colorado Translators Association
* MITA - Metroplex Interpreters and Translators Association
* NCATA - National Capital Area Chapter of the American Translators Association
* NMTIA - New Mexico Translators and Interpreters Association
* NYCT - New York Circle of Translators
* NCTA - Northern California Translators Association
* NOTIS - Northwest Translators and Interpreters Society
* NETA - New England Translators Association
* SCATIA - Southern California Area Translators and Interpreters Association
* WITS - Washington State Court Interpreters and Translators
