- FNB
- First National Bank (Business » Firms)* Food and Nutrition Board (Governmental » US Government)* Food and Nutrition Board (Medical » Physiology)* First Chicago Corporation (Business » NYSE Symbols)* Flexible Network Bus (Computing » Networking)* Frequency - Narrow Band (Governmental » NASA)* Frequency - Narrow Band (Governmental » Military)* Frequency - Narrow Band (Academic & Science » Electronics)* Flexible Narrow Beam (Academic & Science » Electronics)* Failure Notification Board (Governmental » Military)* Failure Notification Board (Governmental » NASA)
Abbreviations dictionary. 2012.