Sri Purushotammar Temple is a Lord Vishnu temple in Thirunangur in Nagapattinam district of Tamil Nadu. It is one of the 108 divya desam, where Lord Vishnu was worshipped by Thirumangai Alwar.
According to legends, Vyakrapatha rishi has worshipped here. It is a Uttirithadi Nakshitram parihara stalam.

108 Divya Desam
This temple is one of the important Divya Desam in this earth known as Bhuloka Vaikuntam- abode of Vishnu on earth. Various Alwars have composed poems on Lord Vishnu – 6500 years back according to legends. Their composition of poems on Lord Vishnu temples all over India is known as Divya Prabandham which was compiled in 9th century.