This doctoral dissertation will attempt to position the importance of digital transformation of business from the perspective of sports organization governance and governance in the sports industry in general. In contemporary management of sports organizations, as in all social sectors, use of digital tools has become an everyday occurrence. The theoretical part will primarily provide an overview of what sports and digital transformation mean in today's context, as well as what is the importance of management in today's governance of sports communities. The theoretical part of the paper will provide an overview of business areas where digital tools have already been applied. Practical examples will be used to present in what way have business operations of sports organizations digitally transformed and what impacts can certain digital tools have on certain segments. The research part of the dissertation will attempt to provide answers regarding the impact usage of digital tools has on certain business areas of sports organizations in the Republic of Croatia. The research of practical applications of elementary digital tools such as a computer or a printer, and a study of the usage intensity for certain digital tools, will try to establish the level of digital transformation of sports organization governance in the Republic of Croatia. For the purposes of this research, levels of digital transformation were defined through their complexity, manner of usage, but also application in everyday activities. The elementary level is the infrastructure one, it involves essential tools that make usage of digital tools on higher levels possible. The communication level is based on usage of digital tools in everyday communication with members, supporters, fans and, in general, for public communications. The applicative level refers to usage of more advanced tools in everyday work and governance of a sports organization, such as various software solutions. The analytical level of digital transformation includes application of digital tools in the analysis of all segments of business. The aim of the analytical approach is to increase efficiency through continuous monitoring of important parameters in the business operations of a sports organization. The integrated level of digital transformation regards application of digital tools for an analytical approach in the training process and the competition itself. The integrated level focuses on improvement of sports results and increase of sporting success of each individual, as well for members of the entire sports community.After defining the levels at which sports organizations in the Republic of Croatia are, an attempt will be made to connect those levels with success in certain business areas of each sports organization. The research will show if there is a connection between the digital transformation level and the number of members, i.e., the digital transformation level and the size of the budget in a sports organization, i.e., the level of success in business operations and collecting funds. In addition to its scientific contribution, another aim of this doctoral dissertation is to provide recommendations for governing bodies of sports organizations, through an analytical approach to the subject matter, regarding the manner in which they can efficiently apply certain digital tools in upcoming everyday businesses operations. The last chapter of the doctoral dissertation will provide recommendations for future actions and future research. Research results showed interesting data on the level of digital transformation of sports organizations in the Republic of Croatia. Different digital transformation levels depend on different factors, and in certain sports organizations there are noticeable similarities in the level of digital transformation based on certain characteristics of sports organizations in terms of their organization. Different characteristics have a different impact on factors of certain levels of digital transformation.