| CLCS | Calvary Lutheran Church and School 
| Others |
| CLCS | Carolina Lure Coursing Society
| Others |
| CLCS | Center for Language and Communication Studies
| Others |
| CLCS | Center for Literary and Cultural Studies
| Others |
| CLCS | Chautauqua Lake Central School
| Others |
| CLCS | Checkout and Launch Control System
| Others |
| CLCS | Chris Lavender Computer Services
| Others |
| CLCS | Christ Lutheran Church and School
| Others |
| CLCS | Clcscheckout And Launch Control System
| Others |
| CLCS | Clear Lake Christian School
| Others |
| CLCS | Clear Lake Christian School's
| Others |
| CLCS | Commercial Lines Coverage Specialist
| Others |
| CLCS | Commission on the Limits of the Continental Shelf
| Others |
| CLCS | Community Learning Center Schools
| Others |
| CLCS | Comparative Literary And Cultural Studies
| Others |
| CLCS | Compliance Legal Consultancy Services
| Others |
| CLCS | Consequence Limiting Control System
| Others |
| CLCS | Construction Life Cycle Support
| Others |
| CLCS | Contractor Life Cycle Support
| Others |
| CLCS | Core Laboratory For Clinical Studies
| Others |
| CLCS | Country Lane Candle Supplies
| Others |
| CLCS | Cross Lanes Christian School
| Others |
| CLCS | Current Logic Current Switching
| Others |