| NCLS | National Capital Legal Services National Capital Legal Services 
| Others |
| NCLS | National Character and Leadership Symposium
| Others |
| NCLS | National Church Life Survey
| Others |
| NCLS | National Church Life Surveys
| Others |
| NCLS | National Committee on Levee Safety
| Others |
| NCLS | National Committee on Levee Safety's
| Others |
| NCLS | National Conference of Lawyers and Scientists
| Others |
| NCLS | National Conference of Lawyers Scientists
| Others |
| NCLS | National Conservation and Leadership Summit
| Others |
| NCLS | Newton Chinese Language School
| Others |
| NCLS | Newton County Library System
| Others |
| NCLS | North Country Library System
| Others |
| NCLS | Northern California Lindy Society
| Others |
| NCLS | Notched Constant Ligament Stress
| Others |