📘 The object of this book is to provide a compact exposition of the fundamental results on recurrent manifolds and Sasakian manifolds. This book is useful mainly for those who are totally unfamiliar with recurrent manifolds and Sasakian manifolds. Those who are already acquainted with recurrent manifolds and Sasakian manifolds will fell interested in application of their research. I hope this book will be much useful for researchers in the field of Riemannian geometry and differential geometry mainly in recurrent manifolds and Sasakian manifolds. The text starts with a chapter on Preliminaries discussing basic concepts and results which would be taken for general later in the subsequent chapters of this book. This is followed by the study of a recurrent Riemannian manifolds and Ricci a recurrent Riemannian manifolds, generalized recurrent Riemannian manifolds, generalized r - recurrent and generalized Ricci r - recurrent Riemannian manifolds, generalized recurrent Sasakian manifold and generalized Ricci recurrent Sasakian manifold and Einstein projective Sasakian manifolds.