Walagamba (Sinhala: වළගම්බා), also known as Vattagamani Abhaya and Walagambahu, was a king of the Anuradhapura Kingdom of Sri Lanka. Five months after becoming king, he was overthrown by a rebellion and an invasion from South India, but regained the throne by defeating the invaders fourteen years later. He is also known for the construction of the Abhayagiri Dagaba.