The conscious acceptance and recognition of diversity, particularly in terms of language, of Southeast Asian nations distinguishes the ASEAN Socio-Cultural Community (ASCC) Blueprint. Thus, the ASEAN’s promotion of languages in the wake of reports from international and local agencies, such as the Enduring Voices Project and Ethnologue, that a significant number of the world’s languages, particularly some of the ASEAN languages, are now endangered, if not extinct, augurs well for the linguistics discipline. This paper will: (1) reiterate the importance of documenting languages through their preservation and revitalization, by citing case studies and linguistic surveys conducted in different areas in the Philippines and Malaysia; (2) call for a strong linguistics program for each member country through the scholarly exchanges of linguists, similar to what was implemented in the Philippines and Thailand in the 1970’s; and (3) highlight vital points and bring attention to what constitutes “ASEAN languages” in the face of a seemingly apparent inclination towards the “major” languages (spoken by the majority of the population) or the regional and local lingua franca, as well as the language(s) of the international community.