Cels
Cels may refer to:
- CelS, Cellulose 1,4-beta-cellobiosidase, an enzyme
- CELS ratings, a supervisory rating system to classify a bank's overall condition
- HUGO Committee on Ethics, Law and Society of the Human Genome Organisation
- Center for Legal and Social Studies, Argentine human rights organization presided by Horacio Verbitsky
- Cels
- , Spanish cartoonist and illustrator, creator of Fanhunter cartoons
- , Catalan folklorist and engineer.