Chengannur Mahadeva Temple, located in Chengannur in Alappuzha District, is an ancient Hindu temple dedicated to Lord Shiva and Goddess Parvathy. Kerala Tourism describes the temple as being more than 1,500 years old and traditionally associated with the legendary architect Perunthachan.

The temple is admired for its traditional Kerala architecture, intricate woodwork, Koothambalam, mandapams and distinctive sanctum, where Lord Shiva faces east and Goddess Parvathy faces west. It is especially famous for the unique Thriputharattu festival, associated with the menstruation of Goddess Parvathy and regarded as a symbol of fertility and divine feminine power.