The present study was conducted to design a a model for the development of volunteering for the disabled in sports based on data theory. The research method based on purpose was applied and exploratory in terms of data collection. The research data were collected through semi-structured interviews with 15 professors of sports management and specialists in the field of disability and volunteering. The sampling method was purposeful with snowball technique and based on theoretical saturation criteria. The data were analyzed using open, axial and selective coding based on grounded theory. Based on the results obtained, causal factors in the categories of economic value of the volunteering sector, the need to identify the motivations and needs of volunteers, the high ability of disabled volunteers and spending leisure time; Underlying conditions in the categories of non-compliance of sports facilities with the disabled, legal context, poor management and macro-policy inattention to the issue of volunteering; Interfering factors in the categories of lack of easy access, personal limitations, ignorance of volunteering in Iranian sports, lack of proper volunteering position, negative attitude towards the ability of the disabled and mental health motivation,, promoting participation and sports volunteering for the disabled and finally Implications for the development of sports volunteering for the disabled are included in the categories of improving the quality of life, improving the status of individual independence, the effectiveness of the performance of sports organizations, the development of social capital and the development of social justice.