The term Client may have the following meanings.
- The original one. In ancient Rome, a client was someone, usually a freed slave, who was attached to a rich patron benefactor; this was necessary for many who were not legally able to secure citizenship, a right initially reserved for the patrician class.
- In traditional commerce and in the marketing and provision of services, a client or customer consumes or benefits from a product or service. See also: marketing, end-user, consumer
- Client (computing), a system that accesses remote services on another computer.