| FRN | F***ing Railroad Nut 
| Others |
| FRN | F**king Right Now
| Others |
| FRN | Faculty Resource Network
| Others |
| FRN | Fall Rally North
| Others |
| FRN | Family Resource Navigators
| Others |
| FRN | Family Resource Network
| Others |
| FRN | Family Resource Networks
| Others |
| FRN | Fath Riadi Nador
| Others |
| FRN | FCC (Federal Communications Commission) Registration Number
| Others |
| FRN | Fcc Registration Number
| Others |
| FRN | Federal Register Notice
| Others |
| FRN | Federal Register Notices
| Others |
| FRN | Federal Registration Number
| Others |
| FRN | Federal Relations Network
| Others |
| FRN | Federal Republic of Nigeria
| Others |
| FRN | Federal Reserve Note
| Others |
| FRN | Federal Reserve Notes
| Others |
| FRN | Feedback Related Negativity
| Others |
| FRN | Fiber Reinforced Nylon
| Others |
| FRN | Fiberglass Reinforced Nylon
| Others |
| FRN | Filter Response Normalization
| Others |
| FRN | Firm Registration Number
| Others |
| FRN | Fixed Rate Note
| Others |
| FRN | Floating Rate Note
| Others |
| FRN | Floating rate notes
| Others |
| FRN | Floating-Rate Note
| Others |
| FRN | Food Recovery Network
| Others |
| FRN | For Right Now
| Others |
| FRN | Force Requirement Number
| Others |
| FRN | Force Requirements Number
| Others |
| FRN | FoReigN Affiliation
| Others |
| FRN | Foundations Recovery Network
| Others |
| FRN | Frame Relay Network
| Others |
| FRN | Free Radio Network
| Others |
| FRN | Friends of Rio Nido
| Others |
| FRN | Fuel Rewards Network
| Others |
| FRN | Fugitive Recovery Network
| Others |
| FRN | Full Range Naphtha
| Others |
| FRN | Funding Request Number
| Others |
| FRN | Further Review Needed
| Others |