Incidence

Incidence may refer to:

Economics

 * Benefit incidence, the availability of a benefit
 * Expenditure incidence, the effect of government expenditure upon the distribution of private incomes
 * Fiscal incidence, the economic impact of government taxation and expenditures on the economic income of individuals
 * Tax incidence, analysis of the effect of a particular tax on the distribution of economic welfare

Mathematics

 * Incidence algebra, associative algebra used in combinatorics, a branch of mathematics
 * Incidence geometry, the study of relations of incidence between various geometrical objects
 * Incidence (geometry), the binary relations describing how subsets meet
 * Incidence (graph), in graph theory, a quality of some vertex-edge pairs
 * Incidence list, a concept in graph theory
 * Incidence matrix, a matrix that shows the relationship between two classes of objects
 * Incidence structure, a feature of combinatorial mathematics
 * Cumulative incidence, a measure of frequency

Other uses

 * Angle of incidence, a measure of deviation of something from "straight on"
 * Incidence (epidemiology), a measure of the risk of developing some new condition within a specified period of time
 * Plane of incidence, relating to optical reflection
 * Incidence (video game), a minimalist golfing style game by ScrollView Games