The bryozoan fauna of the famous coral-locality Scharrergraben near Piesting, Lower Austria consists of 18 taxa, 13 of which encrust corals or more rarely rudists. This fauna is one of the richest bryozoan faunas described from the Late Santonian of Europe, a time slice in which few bryozoan faunas have been studied. Thus the fauna of Scharrergraben is an important piece in the puzzle of Santonian bryozoan biogeography. The faunal composition indicates a shallow marine, relatively strongly agitated habitat with a moderate sedimentation rate in a tropical setting.