Effective corporate governance is essential if a company is to set and meet its strategic goals. The corporate governance structure combines controls, policies, and guidelines that direct the organization toward its goals while meeting stakeholder needs. The corporate governance structure is often a combination of different mechanisms. The supervisory board is an important part of the corporate governance structure; it is a kind of connection between the owners of the shares and the top managers who, by virtue of their position, are in charge of creating value in the company. Supervisory boards play a major role in risk management. They contribute to the checks and balances that every bank needs. Companies committed to increasing the number of women on their boards actively promote equal opportunities at work – in terms of responsibility, pay, employment, promotion and training – for both men and women. Men and women should be given the same level of responsibility, visibility and diversity of positions and be prepared for higher positions. In all EU member states, men make up the majority of board directors, and women are underrepresented. This underrepresentation of women in management is one of the key gender gaps in the European Union. The subject of the work is to investigate the share of women in the supervisory boards of companies in the Republic of Croatia and their influence on business performance, and the basic hypothesis of the work is that there is a connection between the representation of women and business profitability. Correlation analysis confirmed the hypothesis of the work, and according to the analysis of gender representation, it can be concluded that out of 60 companies analyzed, only six companies have 50.00% or more women in the supervisory board. On average, companies have 4.58 supervisory board members, while only 1.11 are women, or an average of 24.56%.