Thanjai Mamani Koil is a revered group of three Vishnu temples located in Thanjavur, Tamil Nadu. Collectively known as Thanjai Mamani Koil, these temples are dedicated to Lord Vishnu in his forms as Neelamegha Perumal, Manikundra Perumal, and Narasimha Perumal.

These Divya Desams, celebrated in the hymns of the Azhwars, hold immense significance in Vaishnavism. The temples are renowned for their architectural beauty, spiritual ambiance, and their connection to the legendary king Thanjan, who attained liberation here. A visit to Thanjai Mamani Koil offers devotees an enriching experience of devotion, culture, and heritage.