Foreign Language - General

Alabama World Languages Association (AWLA)
American Council on the Teaching of Foreign Languages (ACTFL)  
Southern Conference on Language Teaching (SCOLT)

African Languages

African Languages Teachers Association (ALTA)

Arabic

American Association of Teachers of Arabic (AATA)

Chinese

Chinese Language Teachers Association USA (CLTA)

French

American Association of Teachers of French (AATF)

German

American Association of Teachers of German (AATG)
Geothe Institute

Hindi

International Hindi Association

Italian

American Association of Teachers of Italian (AATI)

Japanese

American Association of Teachers of Japanese (AATJ)

Korean

American Association of Teachers of Korean (AATK)

Middle Eastern Languages

Middle East Studies Association (MESA)

Native American Languages

National Coalition of Native American Language Schools and Programs (NALA)
National Indian Education Association (NIEA)

Persian

The American Association of Teachers of Persian (AATP)

Russian

American Council of Teachers of Russian (ACTR)

Slavic and East European Languages

American Association of Teachers of Slavic and East European Languages (AATSEEL)
The Association for Slavic, East European and Eurasian Studies (ASEEES)

Spanish and Portuguese

The American Association of Teachers of Spanish and Portuguese (AATSP)