| Acronym | Definition |
|---|
| NUCO➣National Underwriter Company (Erlanger, Kentucky publisher) |
| NUCO➣National Union of County Officers (UK; now Hospital and Welfare Services Union) |
| NUCO➣National Utilities Company |
| NUCO➣National University of Columbia (Bogota, Colombia) |
| NUCO➣NATO Uniform Code for Operations |