| FNB | First National Bank | 第一国民银行 |
| FNB | Food and Nutrition Board (Institute of Medicine, National Academy of Sciences) | 食品和营养委员会（国家科学院医学研究所） |
| FNB | Frequency - Narrow Band | 频率-窄带 |
| FNB | Flexible Network Bus | 灵活的网络总线 |
| FNB | Food Not Bombs | 要食物不要炸弹 |
| FNB | Front Nouveau de Belgique | 比利时前新运动 |
| FNB | Fancy New Beesly (from The Office television series) | Fancy New Beesly（来自办公室电视剧） |
| FNB | Finska NotisbyrÅn (Finnish National News Agency) | Finska NotisbyrÅn (Finnish National News Agency) |
| FNB | Front of National Blocs (Iraq) | 国家集团阵线（伊拉克） |
| FNB | Food and Beverage (industry) | 食品和饮料（工业） |
| FNB | Fencing New Brunswick | 击剑新不伦瑞克 |
| FNB | Four Non Blondes (band) | 四个非金发女郎（乐队） |
| FNB | Food and Nutrition Board | 食品和营养委员会 |
| FNB | fine-needle aspiration biopsy | 细针抽吸活检 |
| FNB | Failure Notification Board | 故障通知板 |
| FNB | First Chicago Corporation | 第一芝加哥公司 |
| FNB | Flexible Narrow Beam | 柔性窄梁 |