Molecular shape, form and symmetry play a central role in organic chemistry. The aim of this book is to offer a decent understanding of conceptual basis of stereochemistry. Mainly focus lies in the fundamentals of structural stereochemistry rather than the dynamic aspects that are more relevant to reaction mechanisms. In this book, we discuss the basic principles, conformations and configurations, the methods for writing structures in two dimensional and three dimensional projections and their interconversions and chirality. It also discusses the dependence of optical activity on structure and concludes with an examination of topological isomerism. This book is written especially for the students at undergraduate and postgraduate level.