| Acronym | Definition |
|---|
| FSE | Fonds Social Européen |
| FSE | Fondo Sociale Europeo (Italy) |
| FSE | Foundations of Software Engineering |
| FSE | Fast-Spin Echo |
| FSE | Fire Safety Engineering |
| FSE | Fire Support Element |
| FSE | Feuilles de Soins Électroniques (French: Electronic Care Sheets; healthcare) |
| FSE | Full Scale Exercise |
| FSE | Fremont Street Experience (Las Vegas) |
| FSE | Food Service Equipment |
| FSE | Flight Support Equipment |
| FSE | Fédération du Scoutisme Européen |
| FSE | Fornecimentos E Serviços Externos (Portuguese: Supplies and External Services) |
| FSE | Federation of Screenwriters in Europe |
| FSE | Fukuoka Stock Exchange |
| FSE | Fractionally Spaced Equalizers |
| FSE | Focal Symmetrical Encephalomalacia (sheep enterotoxemia) |
| FSE | Four Stroke Engine |
| FSE | Forward Security Element |
| FSE | Factory Support Equipment |
| FSE | Fundación Shakespeare de España (Spain) |
| FSE | Foreign Service Employee |
| FSE | Flight Systems Engineering |
| FSE | Facility Systems Engineer |
| FSE | Fleet Supportability Evaluation |
| FSE | Finite State Encoder |
| FSE | Facility/Fire Support Element |
| FSE | Functional Support Element |
| FSE | Funso Social Europeu (Portugal) |
| FSE | Fixed, Scientific, Engineering (calculator function) |
| FSE | Follow Ship Evaluation |
| FSE | Field Service Engineer(Ing) |
| FSE | Field Support Equipment |
| FSE | File System Emulation |
| FSE | Frankfurt Stock Exchange (Germany) |
| FSE | Feline Spongiform Encephalopathy |
| FSE | Field Sanitation Equipment (US DoD) |
| FSE | Fast Software Encryption |
| FSE | Field Service Evaluation |
| FSE | Fetal Scalp Electrode |
| FSE | Forefront Security for Exchange Server (Microsoft) |
| FSE | Field Sales Engineer (Intel) |
| FSE | File System Extender (software) |