| Acronym | Definition |
|---|
| FSM | Finite State Machine |
| FSM | Flying Spaghetti Monster |
| FSM | Federated States of Micronesia (ISO Country code) |
| FSM | Fórum Social Mundial (World Social Forum) |
| FSM | Free Speech Movement |
| FSM | Flight Schedule Monitor |
| FSM | Functional Size Measurement |
| FSM | Federación Sindical Mundial (Spanish) |
| FSM | Field Service Management |
| FSM | Fédération Syndicale Mondiale (French) |
| FSM | Food Service Management (US Navy) |
| FSM | Franciscan Sisters of Mary (religious order) |
| FSM | Franciscan Sisters of Mary (Religious Order of Catholic Women) |
| FSM | Field Strength Meter |
| FSM | Fast Steering Mirror |
| FSM | Full Screen Mode |
| FSM | Factory Service Manual |
| FSM | Frente Sindical Mexicano (Spanish: Mexican Labor Front) |
| FSM | Field Sales Manager |
| FSM | Fire Safety Manager |
| FSM | Financial Services Marketing |
| FSM | Fine Scale Modeler (Magazine) |
| FSM | Firmware Support Manual |
| FSM | Florida School of Massage |
| FSM | Four Star Mary (band) |
| FSM | Fabless Semiconductor Management (Tensoft, Inc.) |
| FSM | Fort Smith, AR, USA - Fort Smith Municipal (Airport Code) |
| FSM | FDDI Switching Module |
| FSM | Finite State Markov (model) |
| FSM | Facility Sustainment Model |
| FSM | Frequency Shift Modulation |
| FSM | Feasible Successor Metrics |
| FSM | Fixed Survey Meter |
| FSM | Full Service Manual |
| FSM | Female Seeking Male |
| FSM | Freiwillige Selbstkontrolle Multimedia-Diensteanbieter eV |
| FSM | Feature Space Mapping (neural networks) |
| FSM | Fashion Square Mall |
| FSM | Frequent Structure Mining |
| FSM | Flats Sorting Machine |
| FSM | Frame Service Module |
| FSM | First Servicing Mission |
| FSM | Forward State Metric (computing) |
| FSM | Forward Site Modernization |
| FSM | Fleet SIPRNET Messaging |
| FSM | Foodorama Supermarkets |
| FSM | Fuel Supply Manifold |
| FSM | Film Sealing Machine |
| FSM | Fungal Spores Monitor |
| FSM | Functional Specification Mapping |
| FSM | Folded Sideband Modulation |
| FSM | Fan Scroll Motor (automotive HVAC) |
| FSM | feature structure matrix |
| FSM | Fully Surrendered Ministries Inc (Modesto, California) |
| FSM | Fault Summary Message |
| FSM | Folded Sheet Material |
| FSM | Fixed Slope Matching |
| FSM | Flight Simulation Monitor |
| FSM | Factor, Sub-Factor, Metric (software quality metrics model) |
| FSM | Fabricated Sheet Metal |
| FSM | Functional Systems Manager |
| FSM | Les Forces Sous-Marines (French: Submarine Forces) |
| FSM | Free School Meal (various locations) |
| FSM | Forerunner School of Ministry (Alabama) |
| FSM | Fusion Splicing Machine (Fujikura) |
| FSM | Fluid and Solid Mechanics (various schools) |
| FSM | Femtocell Station Modem Chipset (Qualcomm) |
| FSM | Fantasy Sports and Mathematics |
| FSM | Fondazione Salvatore Maugeri (Italian: Salvatore Maugeri Foundation) |