Professionalism is meticulous adherence to undeviating courtesy, honesty, and responsibility in one's dealings with customers and associates, plus a level of excellence that goes over and above the commercial considerations and legal requirements which is needed as a key for business success. The study was conducted for three years in 2017-19. The South Gujarat which has seven districts and all were included for investigation. Every year two districts were taken and from each district 100 respondents were selected. Thus, the total respondents were 700. Majority of the respondents had middle age category and medium level of income, family size, social participation, faith in people, group motivation and moderate level of perceived benefits of co-operative societies and knowledge about principles of co-operation. Majority of the respondents had average level degree of professionalism. Income, attitude towards co-operative society, attitude towards other members of the co-operative society, faith in people, perceived benefits of co-operative society, group motivation and knowledge about principles of co-operation were positively significant with degree of professionalism in management of primary dairy co-operatives.