TESOL may refer to:
- The acronym "Teaching English to Speakers of Other Languages", used in English as a Foreign or Second Language (EFL/ESL). This term is used to identify the educational training of teachers who wish to teach English to non-native speakers. There is a wide range of training programs around the world - ranging from short term certificates to doctoral programs.
- TESOL, Intl. Inc., a professional organization based in the United States for people working in this field. The organization was founded in the 1960s and has a worldwide membership, with regional affiliates around the world. Region specific organizations are found globally such as TESOL Asia, TESOL Argentina
- Tramitación Electrónica de Solicitudes, the Spanish online transaction processing system