Lady of the Bedchamber is the title of a lady-in-waiting holding the official position of personal attendant on a British queen regnant or queen consort. The position is traditionally held by the wife of a peer. A lady of the bedchamber would give instructions to the women of the bedchamber on what their queen wished them to do, or may carry out those duties herself.

A lady-in-waiting or court lady is a female personal assistant at a court, attending on a royal woman or a high-ranking noblewoman. Historically, in Europe, a lady-in-waiting was often a noblewoman but of lower rank than the woman to whom she attended. Although she may either have received a retainer or may not have received compensation for the service she rendered, a lady-in-waiting was considered more of a secretary, courtier, or companion to her mistress than a servant.