Cels

Cels may refer to:


 * CelS, Cellulose 1,4-beta-cellobiosidase (reducing end), an enzyme
 * CELS ratings, a supervisory rating system to classify a bank's overall condition
 * HUGO Committee on Ethics, Law and Society (CELS) of the Human Genome Organisation
 * Center for Legal and Social Studies (CELS), Argentine human rights organization presided by Horacio Verbitsky


 * Cels (surname)
 * Cels Piñol, Spanish cartoonist and illustrator, creator of Fanhunter cartoons
 * Cels Gomis (1841 - 1915 ), Catalan folklorist and engineer.