Welcome to Interactive Probability. While many excellent books on probability theory are already out there, these online notes were created to present the subject through animations and interactive models. A PDF or any other static document format is not suitable for this task. The first version of these notes appeared in Autumn 2021 while I was teaching the course Probability, Statistics, and Stochastic Processes (MA2L003) at IIT Bhubaneswar. Since then, new material, graphs, and simulations have been added and will continue to be updated over time. This website features two index pages: one lists the lecture notes for each chapter, and the other contains relevant exercises.