- Containers
- Containment building
- Contaminants of emerging concern
- Contaminated land
- Contamination
- Content management
- Contention
- 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
- Control variates
- Control volume
- Control zone
- Control-c
- Control-flow diagram
- Control-flow graph
- ControlNet
- Controllability
- Controllability gramian
- Controllable pitch propeller
- Controlled airspace
- Controlled burns
- Controlled low strength material
- Controlled natural language
- Controlled radical polymerization
- Controlled release
- Controlled vocabulary
- Controlled waste
- Controlling
- Controlling for a variable
- Convalescence
- Convection
- Convection cells
- Convection oven
- Convection zone
- Convective heat transfer
- Convective mixing
- Convenience sampling
- Conventional pollutant
- Converged infrastructure
- Convergence
- Convergence test
- Convergence zone
- Convergent boundary
- Convergent matrix
- Convergent series
- Convergent synthesis
- Convergent thinking
- Conversational commerce
- Conversion
- Conversion coating
- Converted
- Converter
- Converter station
- Convertibles