The article presents phenomenological research, the aim of which is to describe supervision from the existential-phenomenological perspective by distinguishing its characteristic features. The research is based on a description of the experience of 12 research participants acting as supervisees and supervisors. The results are summarized in two definitions. The research has revealed four dimensions of the phenomenon, three of which coincide from both of the research participants’ positions: the peculiarities of the supervision process, the way of the supervisor’s presence and the relationship between the supervisor and the supervisee have been distinguished as important characteristics of existential-phenomenological supervision by the research participants. The way in which the supervisor is present has been named as one of the most important characteristics of existential-phenomenological supervision by the research participants acting as supervisees. Meanwhile, the research participants, acting as supervisors, placed stronger emphasis on the supervision process itself. The result of the supervision as a sensuous change and not the reception of a mental answer has been described as an important feature of phenomenological supervision. Meanwhile, research participants, acting from a supervisor’s position, described interventions used in the supervision as an important, yet a least-frequently met characteristic of existential-phenomenological supervision.