Nowadays, increasing attention is dedicated to entrepreneurship as a driver of economic and social development. The number of start-ups is growing strongly, and the startup world is the leading player in the entrepreneurial system. This growth is correlated to the growth of Business Angels, who are playing a key role in the process of financing a startup. As well as providing financial support through the capital invested, BAs support the development of innovation, they are active members in the management of the companies and bring significant added value to them. In this context, Business Angels can be considered an important field of research in economics, finance, and business management.