Thailand TESOL or ThaiTESOL for short, is a professional, non-profit and non-political organization and, until her in passing in January 2008, was under the patronage of H.R.H Princess Galyani Vadhana Krom Luang Naradhiwas Rajanagarindra.

The purposes of ThaiTESOL are to strengthen English language education at all levels, to undertake research in the Teaching  of English to Speakers of Other Languages , to offer scholarships, to disseminate information and to cooperate in appropriate ways with other groups having similar aims and objectives.