The article is devoted to the study of the "ego function" features of persons with different functional loneliness orientations. It discusses the views of scientists on the definition of the concepts of loneliness, and ideas about the functions of the ego, are included in the framework of the human model of personality by G. Ammon. The results of an empirical study aimed at determining the features of self-functions of individuals with different functional orientations of loneliness are stated. The bonds between the indicators of ego functions such as aggression, anxiety, internal and external selflimitations, narcissism, sexuality; and the types of functional loneliness orientation are established. Groups of creative, adaptive and self-destructive experiences of loneliness are defined. It has been established that groups of individuals with a different loneliness experience are distinguished by the specifics of the manifestation of ego functions (constructive, destructive, deficit). A descriptive characteristic of the ego-functional profiles of individuals with different experience types of loneliness orientation are presented, and their psychological portraits are compiled. It has been proven that people having creative types of loneliness experiences are inherently more sociable, empathetic, open, able to constructively overcome difficulties and interpersonal conflicts, have higher self-esteem, are more ambitious, realistic in their perception of themselves and others, emotionally and spiritually mature, and able to express feelings and emotional experiences. Persons with an adaptive type of loneliness experience are characterized by control of interpersonal distance, rational use of available resources, difficulties in setting and upholding personally significant goals, inconsistency of emotional experience, instability concerning oneself, emotional depreciation of important events and significant relationships, blocking activities; and feelings of fatigue, boredom and emotional emptiness. Persons with a self-destructive type of loneliness experience are characterized by between the person’s inner world and his social environment, resulting in increased mental stress, fear of the future, anxiety, uncertainty, dissatisfaction with life.