Training of athletes with disabilities in various adaptive sports in recent years is an important area of research. However, the effectiveness of the process of training athletes depends not only on training programs, but also on the quality of training of coaches in adaptive sports, which play a key role in the socialization and integration of people with disabilities through the use of sports. The problem of training for the field of adaptive sports is relevant and needs to be addressed urgently. The purpose is to substantiate the structure and content of professional preparedness of coaches in adaptive sports. To solve this goal, we used the following research methods: analogy, analysis, synthesis, abstraction, induction, extrapolation, generalization of practical experience. As a result of the research the structure of professional preparedness of a coach in adaptive sports is substantiated, which includes general-theoretical preparedness, special- theoretical preparedness, professional-pedagogical preparedness and professional-practical preparedness. The content of the components of professional preparedness of a coach in adaptive sports has been supplemented on the basis of taking into account the ideological orientation of adaptive sports and the peculiarities of motor activity of athletes with disabilities. The components of professional and pedagogical preparedness and professional and applied preparedness should cover the specifics of the sport, so their content may differ in part in different adaptive sports. The special theoretical basic preparedness of a coach in adaptive sports, in addition to the available scientifically sound content, should include information content on the basics of sports biomechanics, rehabilitation, anti-doping legislation and classification.