Thirunelli Temple is an ancient temple dedicated to Lord Vishnu on the side of Brahmagiri hill in Kerala. The temple is at an altitude of about 900m in north Wayanad in a valley surrounded by mountains and beautiful forests. It is 32 km away from Manathavady.
No proper records of the exact dates of establishment of temple exist, though it is beyond dispute that Thirunelli was once an important town and pilgrim center in the middle of inaccessible jungle valley surrounded on four sides by mountains. There exists documentary proof that Thirunelli at the time of Chera king Bhaskara Ravi Varma I (962–1019 CE) was an important town and pilgrim center in south India. In the dense jungles surrounding temple, the ruins of two ancient villages can be found. Excavations at the time of paving roads have yielded period coins from the 9th and 10th centuries. Noted historian V. R. Parameswaran Pillai in his book Thirunelli Documents clearly states that this temple was once an integral part of the early history of North Kerala.