In this book, we explore the major Celtic gods and goddesses revered by the ancient Druids, examining their roles, attributes, and significance within Celtic mythology and religion. The ancient Celts, an Indo-European people who inhabited parts of Europe from the Iron Age through the Roman period, had a rich and diverse pantheon of gods and goddesses that formed the core of their religious beliefs and practices. Central to Celtic religion were the Druids, a class of priests and scholars who served as intermediaries between the mortal realm and the divine, and who played a crucial role in preserving and transmitting knowledge about the gods and goddesses revered by the Celts.