ENThis study seeks to determine the effect of nepotism and favouritism on organisational climate. Using the method of random sampling, 269 persons working in Lithuanian organisations were surveyed. The received data was analysed via the application of the methods of correlation and linear regression. It was determined that organisational climate is influenced significantly by variables such as the manager’s behaviour, safety and relationships with employees, values and traditions, communication, sharing of information, behaviour of employees, and interrelationships and tolerance of one another. Meanwhile, nepotism and favouritism are influenced by the lower number of climate variables (fear related to the absence of concreteness and security, such as joining an organisation, union and tolerance of individuals who have shared interests). This work fills the void in the knowledge of connections that nepotism and favouritism have with organisational climate, drawing attention to the mutual interaction between these phenomena. The article presents a discussion and the research limitations, and provides guidelines for further research. Keywords: nepotism, favouritism, organisational climate, employee behaviour, manager behaviour. [From the publication]