English as a Foreign Language, or EFL, refers to learning and using English as an additional language in a non-English speaking country. It can be compared with ESL and ESOL, which refer mainly to learning English as a new resident in an English-speaking country.

Example
EFL includes short summer courses in an English speaking country, such as the UK, Canada or the US.

In the classroom
EFL materials tend to be written for learners either studying English in their own country or on a short course in an English-speaking country. ESL materials tend to focus on ‘survival English' for people now living in an English-speaking country.