Arulmigu Abhi Mukheswarar Temple is an ancient Hindu temple dedicated to Lord Shiva, located on the eastern side of the Mahamaham Tank in Kumbakonam, Tamil Nadu. It is one of the 12 primary Shiva temples associated with the Mahamaham festival, which occurs every 12 years. Lord Abimukeswarar and Goddess Amirthavalli are the primary Gods of this temple. It is believed that Govinda Theeksithan, the Chieftain of Achutha Nayakar of Thanjavur, renovated the temple during the 16th century.