The Peruvudaiyar Kovil also known as Periya Kovil, Brihadeshwara Temple, RajaRajeswara Temple and Rajarajeswaram, at Thanjavur in the Indian state of Tamil Nadu, is a Hindu temple dedicated to Shiva. It is an important example of Tamil architecture achieved during the Chola dynasty. The temple is part of the UNESCO World Heritage Site known as the "Great Living Chola Temples".