Kebiliththa Devalaya, also known as Maha Siyambalawa Devalaya, is a sacred site located in Block IV of Yala National Park in the Southern Province of Sri Lanka.

The site is believed to be the spiritual retreat of the deity Kataragama, who is said to spend most of his days meditating at Kebiliththa.

Visitors to the site are required to observe a period of spiritual preparation, which includes staying away from alcohol, meat, fish, and eggs for at least a week before making offerings or participating in the worship process.