Hinduism is often regarded as one of the world's most ancient living religions, and its oldest scriptures were composed more than 3000 years ago. It may therefore come as a surprise that people did not start calling themselves Hindus until the 15th century. How should we understand the late appearance of this term as a self-referential category, and what does it tell us about religion in South Asia? In this course, we will trace Hinduism's roots from the earliest period up to the 15th century, examining not only continuity in religious thought and practice but also diversity in the traditions that came to form a single Hindu community.