"The American Council on the Teaching of Foreign Languages (ACTFL) is the only national organization dedicated to the improvement and expansion of the teaching and learning of all languages at all levels of instruction. ACTFL is an individual membership organization of more than 9,000 foreign language educators and administrators from elementary through graduate education, as well as government and industry."
TESOL - Teachers of English to Speakers of Other Languages, Inc.
"Teachers of English to Speakers of Other Languages, Inc. (TESOL), is a global association for English language teaching professionals headquartered in Alexandria, Virginia, USA. TESOL encompasses a network of approximately 52,000 educators worldwide, consisting of more than 12,000 individual members and an additional 40,000 educators within the 100 plus TESOL affiliate associations. Representing a multifaceted academic discipline and profession, TESOL offers members serial publications, books, and electronic resources on current issues, ideas, and opportunities in the field of English language teaching.
NAFSA: Association of International Educators
NAFSA is the leading professional association dedicated to international education. "NAFSA serves international educators and their institutions and organizations by establishing principles of good practice, providing training and professional development opportunities, providing networking opportunities, and advocating for international education."