| Acronym | Definition |
|---|
| NNCO➣National Nanotechnology Coordination Office |
| NNCO➣National Network for Collaboration (Fargo, ND) |
| NNCO➣National Nephrology Certification Organization (est. 1998) |
| NNCO➣Newspaper Network of Central Ohio |
| NNCO➣National Network of Constituent Organizations (National High School Alliance; Washington, DC) |
| NNCO➣Nordic Naturals Complete Omega (personal health product) |