An inventory of the many geosites of the Abruzzo Region is discussed. There are two main geological districts in Abruzzo: the Central Apennine Mesozoic-Cenozoic limestones, and the Flysch basins toward the Adriatic coast. The inventory considers about 200 geosites and is based on a comparative assessment method. Criteria for the selection of geosites are based on the same characteristics proposed by ProGEO Europe and ProGEO Italy.