The Polish Database of Representative Geosites is a part of the IUGS Global GEOSITES Project, carried out by the European Association for the Conservation of the Geological Heritage (ProGEO). The main objective of the GEOSITES Project is to set up a network of selected objects which represent and document the diversity of geological structures and formations – its means geodiversity and geoheritage of the Earth. The Database, prepared in 2006, contains descriptions of 175 sites, but it is open and should be supplemented in the future. The presented database is a work of the team of authors from several Polish institutes and universities. The editor's thanks to all collaborators which participated in the initiative. The study was supported by the Polish Committee for Scientific Research (KBN) as the grant no. 3P04G 09223.