Category

Category, plural categories, may refer to:

General uses

 * Classification, the general act of allocating things to classes/categories

Philosophy

 * Category of being
 * Categories (Aristotle)
 * Category (Kant)
 * Categories (Peirce)
 * Category (Vaisheshika)
 * Stoic categories
 * Category mistake

Science

 * Cognitive categorization, categories in cognitive science
 * Statistical classification, statistical methods used to effect classification/categorization

Mathematics

 * Category (mathematics), a structure consisting of objects and arrows
 * Category (topology), in the context of Baire spaces
 * Lusternik–Schnirelmann category, sometimes called LS-category or simply category
 * Categorical data, in statistics

Linguistics

 * Lexical category, a part of speech such as noun, preposition, etc.
 * Syntactic category, a similar concept which can also include phrasal categories
 * Grammatical category, a grammatical feature such as tense, gender, etc.

Other

 * Category (chess tournament)
 * Objective-C categories, a computer programming concept
 * Pregnancy category
 * Prisoner security categories in the United Kingdom
 * Weight class (boxing)
 * List of software categories
 * Categories (word game), a classic party game
 * Saffir–Simpson hurricane wind scale, a common categorization of hurricane intensities
 * Categories of New Testament manuscripts
 * Network cable categories: 1, 2, 3, 4, 5/5e, 6/6a, 7/7a (F)
 * A classification in a system of compartmentalization (information security)