| C.L.E.A.R. | Clinical, Leadership, Educational, Administrative, Research personnel assessment scale 
| Others |
| CLEAR | Canadian Loss Experience Automobile Rating
| Others |
| CLEAR | Cellular Level of Emotional Access and Release
| Others |
| CLEAR | Center for Language Education and Research
| Others |
| CLEAR | Centers for Learning on Evaluation and
| Others |
| CLEAR | Chinese Literature Essays Articles Reviews
| Others |
| CLEAR | Citizen Law Enforcement Analysis and Reporting
| Others |
| CLEAR | City Life Education Action for Refugees
| Others |
| CLEAR | Civic Laboratory for Environmental Action Research
| Others |
| CLEAR | Clean Living Environmental and Recycling Inc.
| Others |
| CLEAR | Clear Lens Extraction and Astigmatism Reduction
| Others |
| CLEAR | Clear Logic Edits And Rules
| Others |
| CLEAR | Clearing Lanes Effectively And Rapidly (minesweeping)
| Others |
| CLEAR | clinical, leadership, educational, administrative and research productivity
| Others |
| CLEAR | Coalition for Leadership Education and Advocacy for Recovery
| Others |
| CLEAR | Community Linked Evaluation Aids Resource
| Others |
| CLEAR | Community, Leisure, Education, Art, Recreation
| Others |
| CLEAR | Consumer Learn Engage Adopt Renewable
| Others |
| CLEAR | Controlled Liquid Electrophoresis Absorption Reflection
| Others |
| CLEAR | Coordinated Legal Education Advice Referral
| Others |
| CLEAR | Council on Licensure Enforcement and Regulation
| Others |