- AESL stands for Aero Engine Services Ltd. (Australia and New Zealand)
- AESL stands for Agricultural and Environmental Services Laboratories (University of Georgia; Athens, GA)
- AESL stands for American English Spoken Lexicon (Linguistic Data Consortium; University of Pennsylvania; Philadelphia, PA)
- AESL stands for Academic English as a Second Language (various locations)
- AESL stands for American English as a Second Language
- AESL stands for Associated Engineering Services Ltd. (Belize)
AESL