| Term | Definition / Meaning / Stand for |
| FAB |
Fabrication |
| FOH |
Face of House |
| FM |
Facility Management |
| FMS |
Facility Monitoring System |
| FIB |
Fiber Insulation Board |
| FCR |
Field Change Request |
| FAC |
Final Acceptance Certificate |
| FTR |
Final Test Report |
| FWR |
Final Work Report |
| FF |
Finished Floor |
| FBR |
Fire Barrier Rating |
| FCR |
Fire Control Room |
| FDA |
Fire Detection and Alarm |
| FEC |
Fire Engineering Consultant |
| FER |
Fire Exit Route |
| FFF |
Fire Fighting Foam |
| FHC |
Fire Hydrant Cabinet |
| FIR |
Fire Inspection Report |
| FIS |
Fire Inspection System |
| FIT |
Fire Integration Testing |
| FLS |
Fire Life Safety |
| FPB |
Fire Protection Board |
| FP |
Fire Protection |
| FPD |
Fire Pump Driver |
| FRS |
Fire Resistance System |
| FRS |
Fire Retardant System |
| FSD |
Fire Safety Design |
| FSE |
Fire Safety Engineer |
| FSR |
Fire Safety Report |
| FST |
Fire Suppression Tank |
| FVC |
Fire Ventilation Control |
| FVR |
Fire Ventilation Report |
| FWC |
Fire Water Curtain |
| FWP |
Fire Water Pump |
| FYR |
Fire Year Report |
| FZ |
Fire Zone |
| FZR |
Fire Zoning Report |
| FZT |
Fire Zoning Test |
| FRB |
Fire-Resistant Board |
| FTP |
Fireproof Treatment Process |
| FPC |
Fireproofing Coating |
| FPR |
Fireproofing Rating |
| FXD |
Fixed Equipment |
| FLM |
Flexible Pavement Layer Modulus |
| FD |
Floor Drain |
| FGS |
Floor Grading System |
| FLW |
Floor Load Weight |
| FS |
Floor Slab |
| FSB |
Floor Support Beam |
| FUA |
Floor Utilization Area |
| FV |
Flow Velocity |
| FA |
Fly Ash |
| FC |
Foot Candle (Lighting Measurement) |
| FDI |
Foreign Direct Investment |
| FMC |
Foundation Material Classification |
| F&M |
Foundations and Masonry |
| FF&E |
Furniture, Fixtures, and Equipment |
| FOS |
Factor of Safety |
| FAT |
Factory Acceptance Test |
| FMEA |
Failure Modes and Effects Analysis |
| FMECA |
Failure Modes, Effects, and Criticality Analysis |
| FWD |
Falling Weight Deflectometer |
| FOG |
Fats, Oils, and Grease (Wastewater) |
| FAA |
Federal Aviation Administration |
| FCC |
Federal Communications Commission |
| FHWA |
Federal Highway Administration |
| FLH |
Federal Lands Highway |
| FRA |
Federal Railroad Administration |
| FMB |
Federation of Master Builders |
| FPM |
Feet Per Minute |