- Fissile material
- Fission product yield
- Fixed-wing aircraft
- Fixtures
- Fjords
- Flame detector
- Flame retardants
- Flame tests
- Flange
- Flaps
- Flash
- Flash evaporation
- Flash fire
- Flash point
- Flashing
- Flask
- Flat roofs
- Flatulence
- FlexRay
- Flexibility method
- Flexural modulus
- Flexural strength
- Flexure
- Flibe
- Flight control surfaces
- Flight dynamics
- Flinak
- Float glass
- Flocculation
- Floodgates
- Floodplains
- Floor
- Floor plan
- Flow battery
- Flow control valve
- Flow table test
- Flow velocity
- Flue
- Flue gas
- Flue-gas stacks
- Fluid
- Fluid dynamics
- Fluid mechanics
- Fluid power
- Fluidics
- Fluorapatite
- Fluorescence
- Fluorescence spectroscopy
- Fluorescent lamps
- Fluorite
- Fluorocarbons
- Fluoropolymers
- Flurbiprofen
- Fluvial processes
- Flux
- Fly ash
- Fly ash brick
- Fly-by-wire
- Flywheels
- Foam
- Foam concrete
- Focused ultrasound
- Fog
- Foil
- Food energy
- Food fortification
- Food industry
- Food loss and waste
- Food miles
- Food processing
- Forced convection
- Ford viscosity cup
- Foreign body
- Foreland basins
- Forensic engineering
- Forensic science
- Foreshocks
- Forest management
- Forge welding
- Forging
- Forging temperature
- Form factor
- Formability
- Formal charge
- Formaldehyde
- Formamide
- Formate
- Formic acid
- Forming
- Forming gas
- Formwork
- Forsterite
- Fouling
- Foundations
- Foundry
- Four-point flexural test
- Four-wheel drive
- Fourier-transform infrared spectroscopy
- Foveated rendering
- Fracking
- Fractal dimension
- Fractals
- Fractional crystallization
- Fractional distillation
- Fractionating column
- Fractography
- Fracture
- Fracture mechanics
- Fracture toughness
- Free body diagram
- Free electron model
- Free molecular flow
- Free surface
- Free-radical reaction
- Freeze drying
- Freezing
- Freezing-point depression
- French drain
- Freon
- Fresh water
- Fresnel lens
- Friability
- Friction
- Friction welding
- Frit
- Front-wheel drive
- Frost
- Frost heaving
- Frost line
- Frost weathering
- Froth flotation
- Fructose
- Frustum
- Fuel cells
- Fuel efficiency
- Fuel injection
- Fuel line
- Fuel tanks
- Fugacity
- Fugitive dust
- Fullerene
- Fullerides
- Fumaroles
- Fume hood
- Fumed silica
- Functional disorders
- Functional groups
- Functionally graded materials
- Fungal
- Furan