| Abbreviation | Definition |
|---|---|
| FADU | Fluorometric Analysis of DNA Unwinding |
| FAMB | Física Aplicada a Medicina e Biologia (Portuguese: Physics Applied to Medicine and Biology; Brazil) |
| FAPB | Fellow in Association of Professional Biology |
| FASEB | Federation for American Societies for Experimental Biology |
| FBAN | Freshwater Biological Association of Nigeria |
| FBAP | fluorescent biological aerosol particles |
| FBBR | fluidized bed biological reactor |
| FBED | FLASH Biological Equivalent Dose |
| FBQ | Field Biology Quarter |
| FBRC | Forest Biology Research Center |
| FBRC | Forest Biology Research Cooperative |
| FBRC | Forest Biology Research Cooperative (UF) |
| FBSA | Forest Biology Student Association |
| FBTD | Freshwater Biological Traits Database |
| FCAR | Foundation to Combat Antimicrobial Resistance |
| FDC(s) | follicular dendritic cell(s) |
| FEBI | Facility for Environmental and Biological Imaging |
| FETT | Fetten |
| FGFR | fibroblast growth factor receptor |
| FGTB | Functional Genomics and Translational Biology |