| Acronym | Definition |
|---|
| FRN | FCC Registration Number |
| FRN | FEMA (Federal Emergency Management Agency) Radio Network |
| FRN | Fugitive Recovery Network (bail bonds) |
| FRN | Fonds de Roulement Net (French: Net Working Capital) |
| FRN | Free Radio Network |
| FRN | Floating Rate Note |
| FRN | Federal Register Notice |
| FRN | Federal Reserve Note |
| FRN | File Reference Number (computing) |
| FRN | Frame Relay Network |
| FRN | FirstNation Airways (Nigeria) |
| FRN | Floriana (postal locality, Malta) |
| FRN | Family Resource Network (Brookings, SD) |
| FRN | Fiberglass Reinforced Nylon |
| FRN | Federal Republic of Nigeria |
| FRN | Federal Relations Network (National School Boards Association) |
| FRN | Swedish Council for Planning and Coordination of Research |
| FRN | Federal Registration Number |
| FRN | Front Révolutionnaire National (French: National Revolutionary Front) |
| FRN | Full Range Naphtha (petroleum) |
| FRN | Final Rulemaking Notice |
| FRN | Force Requirement Number |
| FRN | Forum pour La Redressement National (Comoros) |
| FRN | FSA (Financial Services Authority) Registration Number (UK) |
| FRN | Fédération des Réflexologues Normands (French reflexology federation) |
| FRN | Funding Resource Number |
| FRN | Federal Reserve Number |
| FRN | Fraction of Residential Power Supplied by Nuclear (Carolina Environmental Program) |
| FRN | Family Restoration Network, Inc. (Dallas, TX) |