A corporation is a legal entity (distinct from a natural person) that often has similar rights in law to those of a natural person. Civil law systems may refer to corporations as "moral persons;" they may also go by the name "AS" (anonymous society) or something similar, depending on language (see below).

The word "corporation" derives from the Latin corpus (body), representing a "body of people"; that is, a group of people authorized to act as an individual (Oxford English Dictionary). The word universitas also used to refer to a group of people but now refers specifically to a group of scholars (see University). In the United Kingdom and Republic of Ireland, the term corporation was also used for the local government body in charge of a borough. This style was replaced in most cases with the term council in the United Kingdom in 1973, and in the Republic of Ireland in 2001. The sole exception is the Corporation of London which retains the title.

However, in colloquial usage "corporation" usually refers to a commercial entity set up in accordance with a governmental framework.

Churches, interest groups (both can form as not-for-profit corporations or can exist as voluntary associations), cities and townships (often chartered as public corporations), among others, may also have historically lengthy corporate identities.