| Acronym | Definition |
|---|
| CRL | Certificate Revocation List |
| CRL | Center for Responsible Lending |
| CRL | Community Reference Laboratory (Dorset, UK) |
| CRL | Center for Research Libraries |
| CRL | Clinical Reference Laboratory (Lenexa, KS) |
| CRL | Complete Response Letter (US FDA) |
| CRL | Communications Research Laboratory (Japan) |
| CRL | Crown Rump Length (ultrasound fetal measurement) |
| CRL | Center for Research on Learning (University of Kansas) |
| CRL | Chalk River Laboratories |
| CRL | Certified Registered Locksmith |
| CRL | Cambridge Research Laboratory (Compaq) |
| CRL | Chicago Rail Link |
| CRL | Coalition for Responsible Lending |
| CRL | Career Resource Library |
| CRL | California Redevelopment Law |
| CRL | Chemistry Research Laboratory |
| CRL | Consciousness Research Laboratory |
| CRL | Computer Research Lab |
| CRL | Central Regional Laboratory (EPA) |
| CRL | Common Runtime Language |
| CRL | Cellule de Recherche en Linguistique (French) |
| CRL | Countermeasure Readiness Levels |
| CRL | Certified Reporting Limit |
| CRL | Canons Regular of the Lateran (religious order) |
| CRL | Criminal Reference Letter (IRS) |
| CRL | Clinical Reference Library (database) |
| CRL | Country Request Live |
| CRL | Complete Reference Library (Mindscape) |
| CRL | Conventional Rotary Launcher |
| CRL | CODA Readout Language |
| CRL | Construction Reference Line (engineering drawings) |
| CRL | COMSEC Requirements List |
| CRL | Commercialization Readiness Level (NASA) |
| CRL | Cooperative Research Laboratory |
| CRL | Coherent Reverse Link |
| CRL | Cricklewood Redevelopment Limited (UK) |
| CRL | Common Record Log |
| CRL | Cable Running List (telecommunications) |
| CRL | Churngold Remediation Ltd |
| CRL | Cost Readiness Level (project cost estimation; US NASA) |
| CRL | Centre de Ressources en Langues (French: Language Resource Center) |
| CRL | Centre Régional du Livre (French: Regional Book Center) |
| CRL | Centre Régional des Lettres (French: Regional Art Center) |
| CRL | Centre de Ressources Linguistiques (French: Center for Language Resources) |
| CRL | Canada Robotics Ltd. (British Columbia, Canada) |
| CRL | Centre de Réadaptation des Laryngectomisés (French rehabilitation center) |
| CRL | Contribution sur les Revenus de Locations (French: Rental Income Contribution; taxes) |
| CRL | Chalet Résidence Loisirs (French: Leisure Residence Chalet) |