Component

Component could mean:
 Electronic component, part of electronic circuits
 Component ingredient, the main ingredient in a food
 Component video, a type of analog video information that is sent or stored as two or more separate signals
 Symmetrical component, in electrical engineering, analysis of unbalanced three-phase power systems
 Component-based software engineering, a field of study within software engineering dealing with software components, reusable software elements with a specification
 Component (thermodynamics), a chemically distinct part of a phase of a system
 Component (VTA), a light-rail station in San Jose, California
Lumped component, a model of spatially distributed systems

In math
 Component (group theory), a quasisimple subnormal subgroup
 Connected component (analysis), a maximal set where there exists a path between any two elements, also known as a path component
 Connected component (graph theory), a maximal connected subgraph
 Connected component (topology), a maximal connected subspace of a topological space
 Vector component, a term in the breaking down of a vector into various directions such as axial, radial or tangential