Croatian Geological Survey is the successor of the Geological Commission for the Kingdoms of Croatia and Slavonia founded in 1909. The Commission was established thanks to efforts and merits of Dragutin Gorjanović-Kramberger, world-famous scientist. During its hundred-year existence, the Commission/Survey played an crucial role in the development of geology in Croatia, primarily in the production of geological maps in different scales and for different purposes, but also in applying the geological science in practice, e.g., in water resource exploration, landslide prevention and mitigation, exploitation of mineral resources, environmental protection, and construction of infrastructural objects. Key words: Croatian Geological Survey, Geologi...