| Acronym | Definition |
|---|
| NNOC➣National Nurses Organizing Committee |
| NNOC➣National Network on Cuba (US) |
| NNOC➣National Network Operations Center |
| NNOC➣Naval Network Operations Command |
| NNOC➣Nigerian National Oil Company |
| NNOC➣Noord Nederlandse Orgelmakers Coöperatie (Dutch: North Dutch Organists Cooperative) |
| NNOC➣Nisichawayasihk Neyo Ohtinwak Collegiate (Cree Nation secondary school; Nelson House, Manitoba, Canada) |