English abbreviations from clec to clin
- CLEC (Competitive Local Exchange Carrier)
- CLED (Community Leadership, Economic Development)
- CLEMARS (California Law Enforcement Mutual Aid Radio System)
- CLEO (Come Listen Every One)
- CLEOC (Consolidated Law Enforcement Operations Center)
- CLEP (College Level Examination Program)
- C-Level (Category Level)
- CLF (Coltishall (IATA off-point))
- CLFM (Children's Leukemia Foundation of Michigan)
- CLG (core log and graph)
- CLGA (Ceramic Land Grid Array)
- CLGP (Cannon-launched guided projectile (US))
- CLGSA (Civil and Local Government Staff Association)
- CLH (Coolah Airport)
- CLHRF (Canadian Lebanese Human Rights Federation)
- CLI (Command Line Interface/Interpreter)
- CLIA (Clinical Laboratory Improvement Act (1967) … also Clinical Laboratory Improvement Amendments (1988))
- CLIC (Compact LInear Collider)
- CLICK (Certified Literate Is Coweta's Key)
- CLIM (Common Lisp Interface Manager)
- CLIN (Contract Line Item Number)