| Acronym | Definition |
|---|
| NCIS➣Naval Criminal Investigative Service |
| NCIS➣Nothing's Carved in Stone (band) |
| NCIS➣National Coroners Information System (Australia) |
| NCIS➣National Crime Intelligence Service |
| NCIS➣Nebraska Career Information System |
| NCIS➣National Coalition of Independent Scholars |
| NCIS➣Network Communications and Information Systems (various organizations) |
| NCIS➣No Criminal Is Safe (clothing line) |
| NCIS➣New Century Infusion Solutions (Brea, CA) |
| NCIS➣National Centre for Indigenous Studies (Australian National University; Australia) |
| NCIS➣National Crime Investigation Squad |
| NCIS➣National Crop Insurance Service (gathers crop-hail statistics) |
| NCIS➣Nuclear Criticality Information System |
| NCIS➣NATO Common Interoperability Standards |
| NCIS➣Navy Cost Information System |
| NCIS➣Naval Criminal Intelligence Command |
| NCIS➣NATO Common Interface Standard |
| NCIS➣No Change in Status |
| NCIS➣National Coordinated Industry Survey (Australia) |