| Acronym | Definition |
|---|
| NCSS➣National Council for the Social Studies |
| NCSS➣National Council of Social Service (Singapore) |
| NCSS➣National Cooperative Soil Survey |
| NCSS➣Non Commenting Source Statements |
| NCSS➣National Conference of State Societies (Washington, DC) |
| NCSS➣National Center for Sports Safety |
| NCSS➣Nortel Certified Support Specialist |
| NCSS➣Non-Clinical Support Services (various locations) |
| NCSS➣National Center for Seeds and Seedlings (est. 1986; Japan) |
| NCSS➣No-Cry Sleep Solution (book by Elizabeth Pantley and William Sears) |
| NCSS➣National Computer Science School (Australia) |
| NCSS➣Number Crunching Statistical System |
| NCSS➣National Crash Severity Study (traffic accident analysis & reconstruction) |
| NCSS➣Northwestern Counseling and Support Services (Vermont) |
| NCSS➣National Coalition of Spaceport States |
| NCSS➣National Cactus and Succulent Society |
| NCSS➣National Council of State Societies |
| NCSS➣North Coast Sailing Singles |
| NCSS➣Naval Coastal Systems Station |
| NCSS➣National Cyber Security Summit (Santa Clara, California.) |