Patient Safety is an international challenge. The World Health Organization estimates that many patients around the world experience medical disability or death due to unsafe medical care. This book discuss 1- What are the Models of organizational Safety Culture. in this book, there are more than 57 articles regarding Safety Culture theory and models. 2- Patient Safety Culture has been assessed with different tools that focus on the evaluation of Patient Safety Culture dimensions, in this book various method of assessment has been discuss. 3- What are the views of doctors on their supervisor (manager) expectations, actions and the promotion of Patient Safety? 4- What is the influence of communication openness and feedback on errors of Patient Safety ? 5- What are the strengths and weaknesses of Patient Safety Culture at Hospitals? How could they be improved?