ICNB
| Acronym | Definition |
|---|---|
| ICNB | International Code of Nomenclature of Bacteria (bacteriology) |
| ICNB | Instituto da Conservação da Natureza e Biodiversidade (Portugal) |
| ICNB | Ionia County National Bank (Ionia, MI) |
| ICNB | Intercostal Nerve Block |
| ICNB | Iliac Crest Needle Biopsy (cancer detection) |