The manner in which faults are treated is rapidly changing. The simplistic view of a fault as a discrete 2D plane has been replaced by a view that regards faults as 3D features with a complex structure that consists of different zones with widely variable petrophysical characteristics. This complexity is reflected in the highly diverse behavior of faults, which is why fault analysis requires a wide range of concepts and tools. We solicit a broad spectrum of contributions that cover the topics of “fault mechanics”, “fault geometries”, “fault kinematics” and “fault behavior” (rupturing and creeping), using geological outcrop studies, geophysical methods (not restricted to the near-surface), experiments (friction or sand-box models) and numerical modeling studies. Especially welcome are holistic studies that combine these different approaches to achieve a better understanding of faults and outcrop studies of faults that reflect fault-related processes.