Timely and accurate information, as well as the knowledge based on such information in communication are of inestimable value, whether public relations or communication between public authorities and citizens are concerned. One of the biggest accomplishments of modern democratic societies is the transparency of their public authorities which reflects itself through the standard of making public information available to the public, as well as supplying information, depending on their type, to citizens or other subjects. Institutions ensuring citizens’ rights form their foundation on open authority while citizens wish to be informed because otherwise they are not the subjects of political communication and public opinion. This thesis analyses and compares secondary data from annual Croatian and Slovenian reports of independent bodies responsible for the implementation of the Act on the right of access to information, aiming at determining the similarities and differences in the Act’s implementation, as well as understanding the extent in which Croatian and Slovenian societies recognize the importance of this legislation, the sphere of its activity and use its potential.