| Acronym | Definition |
|---|
| FAN | Fanatic |
| FAN | Food and Nutrition |
| FAN | Friends and Neighbours (various organizations) |
| FAN | Forum des Acteurs du Numérique (French: Digital Stakeholder Forum) |
| FAN | Fluoride Action Network |
| FAN | Fabric Area Network |
| FAN | Future Access Network |
| FAN | Force d'Action Navale (French: Naval Action Force) |
| FAN | File Area Network |
| FAN | First Angel Network (venture capital) |
| FAN | Foundation Account Number (AT&T) |
| FAN | Forest Action Network (environmental organization, founded in British Columbia, Canada) |
| FAN | Fabric Address Notification |
| FAN | Freshwater Action Network |
| FAN | Food Allergy Network |
| FAN | Financial Aid Notification |
| FAN | FeedBurner Ad Network |
| FAN | Feminist Archive North (UK) |
| FAN | Facteur Antinucléaire (French: Antinuclear Factor) |
| FAN | Family Area Network |
| FAN | Fair Ads Network |
| FAN | Fixed Account Number |
| FAN | Federation of Armed Nations (gaming, Cybernations Alliance) |
| FAN | Facility Area Network |
| FAN | Free Animals Now (Ace Ventura Pet Detective) |
| FAN | Final Acceptance Notice |
| FAN | Fetal Alcohol Network |
| FAN | Fondation des Amis de la Nature (Burkina Faso) |
| FAN | Forced Air Network |
| FAN | FAO (Food and Agriculture Organization) Aquaculture Newsletter (UN) |
| FAN | Federal Aid Notification |