Control is a word used frequently with many connotations and nuances. It has emerged as thematic in recent qualitative studies of patients’ experiences of the perianesthesia period. The purpose of this paper was to conduct a concept analysis of control in the perianesthesia period, using Walker and Avant's eight-step method. The literature was reviewed, which identified the defining attributes. Model, borderline, contrary, and illegitimate cases are presented, and antecedents and consequences are identified. Control in the perianesthesia period is defined as the perception of the power of choice. Sometimes that choice is to relinquish control to others. The purpose of this concept analysis of control was to clarify the concept and to provide insight into the patients’ perspective, enabling nurses to assess and approach patients from a different viewpoint—one that seeks to help the perianesthesia experience become a less threatening, frightening one and instead a partnership that enhances the well-being of the individual.