A people is a group of individuals who belong to and function within a particular society. In common usage, the term people may be synonymous with human, or otherwise may carry an exclusive meaning. In general, the word people is a collective noun used to define a specific group of humans. However, when used to refer to a group of humans possessing a common ethnic, cultural or national unitary characteristic or identity, "people" is a singular noun, and as such takes an "s" in the plural; (example: "the English-speaking peoples of the world").

The concept of personhood (who is a person within a society) is the fundamental component of any selective concept of people. A distinction is maintained in philosophy and law between the notions "human being", or "man", and "person". The former refers to the species, while the latter refers to a rational agent (see, for example, John Locke's Essay concerning Human Understanding II 27 and Immanuel Kant's Introduction to the Metaphysic of Morals).