Uppiliappan Temple, also known as Venkatachalapathy Temple is a temple dedicated to Hindu god Vishnu, located near Thirunageswaram, a village in the outskirts of Kumbakonam in the South Indian state of Tamil Nadu. Constructed in the Dravidian style of architecture, the temple is glorified in the Divya Prabandham, the early medieval Tamil canon of the Azhwar saints from the 6th–9th centuries AD.
The temple is believed to be of significant antiquity and to have been initiated by the Medieval Cholas of the late 8th century AD, with later contributions at different times from Thanjavur Nayaks. The temple has two inscriptions dating from the Chola period, a five-tiered Rajagopuram (gateway tower), and a granite wall.
The temple observes six daily rituals and three yearly festivals. The chariot festival, celebrated during the Tamil month of “Panguni” (March–April), is the most prominent festival. The temple is maintained and administered by the Hindu Religious and Endowment Board of the Government of Tamil Nadu