This book "Rotational Motion and Rigid Body" is written in accordance with the syllabus prescribed by all INDIAN universities as per New Education policy 2020. The topics in this book have been written clearly and in simple language. This book is student-centric and easily understandable. Some selected numerical problems and model questions are given at the book's end. I tried to write so that everyone could understand what I was saying. Because of this, most readers will find some parts of the book to be very basic, but not everyone. The student will have to learn that language at some point.