- Crop coefficient
- Crop diversity
- Crop residue
- Cross bracing
- Cross compiler
- Cross product
- Cross sea
- Cross section
- Cross sections
- Cross slip
- Cross slope
- Cross ventilation
- Cross-Industry Standard Process for Data Mining
- Cross-bedding
- Cross-conjugated
- Cross-correlation
- Cross-coupling reactions
- Cross-cutting relationships
- Cross-docking
- Cross-entropy
- Cross-entropy method
- Cross-flow filtration
- Cross-flow turbine
- Cross-laminated timber
- Cross-layer optimization
- Cross-linked
- Cross-linked enzyme aggregate
- Cross-linked polyethylene
- Cross-matching
- Cross-phase modulation
- Cross-platform
- Cross-platform software
- Cross-polarization
- Cross-ratio
- Cross-reactivity
- Cross-references
- Cross-resistance
- Cross-sectional
- Cross-sectional data
- Cross-site scripting
- Cross-species transmission
- Cross-staff
- Cross-validation
- Crossbar switch
- Crossed molecular beam
- Crossheads
- Crossing
- Crossing number
- Crosslinking of DNA
- Crossover distortion
- Crossover study
- Crosstalk
- Crosswind landing
- Crosswinds
- Croup
- Crowbar
- Crowd counting
- Crowd simulation
- Crowdfunding
- Crowding
- Crowdsensing
- Crown
- Crown ethers
- Crown gear
- Crown glass
- Cruciate ligament
- Crucible steel
- Cruck
- Crude oil assay
- Crude oil washing
- Cruise
- Cruise control
- Crumb rubber
- Crumple zones
- Crush injury
- Crushed stone
- Crusher
- Crust
- Cryo-electron microscopy
- Cryo-electron tomography
- CryoSat
- Cryoablation
- Cryobiology
- Cryocoolers
- Cryogenic
- Cryogenic electron microscopy
- Cryogenic fuel
- Cryogenic grinding
- Cryogenic treatment
- Cryogenics
- Cryoprecipitate
- Cryopreservation
- Cryoprotectants
- Cryopump
- Cryosphere
- Cryostats
- Cryosuction
- Cryosurgery
- Cryotherapy
- Cryptanalysis
- Cryptands
- Crypto++
- Cryptochrome
- Cryptococcosis
- Cryptocrystalline
- Cryptocurrency
- Cryptogram
- Cryptographic hash functions
- Cryptographic primitives
- Cryptographic protocols
- Cryptography
- Cryptography standards
- Cryptojacking
- Cryptomelane
- Cryptonote
- Cryptorchidism
- Cryptosporidiosis
- Cryptosystem
- Crystal chemistry
- Crystal engineering
- Crystal filter
- Crystal growth
- Crystal habit
- Crystal monochromator
- Crystal oscillator
- Crystal plasticity
- Crystal structure
- Crystal structure prediction
- Crystal systems
- Crystal violet
- Crystalline silicon
- Crystallinity
- Crystallins
- Crystallites
- Crystallization
- Crystallographic databases
- Crystallographic defects
- Crystallographic point groups
- Crystallography
- Crystals
- Ctbp1
- Cubanite
- Cube
- Cube roots
- CubeSats
- Cubic centimetre
- Cubic crystal system
- Cubic equations
- Cubic equations of state
- Cubic feet