China 
Africa 
- Construction robots
- Construction trailers
- Construction waste
- Constructive heuristic
- Constructive proof
- Constructivism
- Constructivist epistemology
- Constructors
- Consultation
- Consumables
- Consumer behaviour
- Consumer goods
- Consumer health informatics
- Consumer privacy
- Consumer unit
- Consumer-to-consumer
- Consumerization
- Contact angle
- Contact area
- Contact dermatitis
- Contact dynamics
- Contact force
- Contact geometry
- Contact graph
- Contact inhibition
- Contact lenses
- Contact mechanics
- Contact microphone
- Contact pads
- Contact patch
- Contact process
- Contact resistance
- Contact tracing
- Contactless payment
- Contactors
- Contagious
- Contagious disease
- Container crane
- Container glass
- Container port
- Container ships
- Container terminal
- Containerization
- Containers
- Containment building
- Contaminants of emerging concern
- Contaminated land
- Contamination
- Content
- Content management
- Contention
- Context
- Context analysis
- Context awareness
- Context model
- Context switch
- Context-adaptive binary arithmetic coding
- Context-aware
- Context-free grammars
- Contextual design
- Contextual inquiry
- Contigs
- Contiki
- Continental arcs
- Continental crust
- Continental shelf
- Contingency
- Contingency table
- Contingent
- Contingent negative variation
- Continual improvement process
- Continuation
- Continued fractions
- Continuity correction
- Continuity equation
- Continuous casting
- Continuous cooling transformation
- Continuous delivery
- Continuous descent approach
- Continuous emissions monitoring system
- Continuous function
- Continuous functions on a compact Hausdorff space
- Continuous improvement
- Continuous integration
- Continuous liquid interface production
- Continuous optimization
- Continuous passive motion
- Continuous performance task
- Continuous production
- Continuous reactors
- Continuous simulation
- Continuous symmetry
- Continuous uniform distribution
- Continuous wave
- Continuous wavelet
- Continuous wavelet transform
- Continuous-time random walk
- Continuous-time stochastic process
- Continuous-wave radar
- Continuum hypothesis
- Continuum limit
- Continuum mechanics
- Contour crafting
- Contour integration
- Contour lines
- Contra-rotating
- Contra-rotating propellers
- Contract management
- Contract manufacturer
- Contract net protocol
- Contract theory
- Contractible
- Contraction
- Contraction hierarchies
- Contraction mapping
- Contraction principle
- Contracture
- Contraflexure
- Contrails
- Contraindicated
- Contrast agents
- Contrast ratio
- Contrast-enhanced ultrasound
- Contrast-to-noise ratio
- Contravariant
- Control Center
- Control Panel
- Control areas
- Control arms
- Control banding
- Control bus
- Control chart
- Control engineering
- Control flow
- Control flow analysis
- Control grid
- Control group
- Control language
- Control loop
- Control plane
- Control points
- Control reconfiguration
- Control register
- Control reversal
- Control rods
- Control system
- Control theory
- Control unit
- Control valve
- Control variables