Velorvattom Mahadeva temple is located at Velorvattom near Cherthala in Alappuzha district, Kerala. There are two Shiva worshipped in the temple – Thekkanappan and Vadakkanappan. The eight-day annual festival in the temple is held in Kumbham month (February –March). Shivratri is another important festival here. The shrine is famous for performing rituals for departed ancestors especially on Karkidaka Vavu Bali day in Karkidakam month. Pitru Tarpanam and other after death rituals are performed in the temple.
As per local belief the temple initially had Vadakkanappan murti. Azhvanchery Thamprakkal once went to Vaikom Mahadeva temple to have darshan of Shiva. But unfortunately the temple had closed by the time they reached the shrine. Saddened at not having darshan, Azhvanchery Thamprakkal reached Velorvattom. At that night the Thamprakkal had a dream that Vaikom Mahadeva will give darshan at the Ganapati Homa Kundam in Velorvattom temple. This resulted in the installation of Thekkanappan.
There are two sreekovils or sanctum sanctorum inside the chuttambalam. Roofs of sreekovil, mandapam and chuttambalam are covered in copper.
The temple is believed to be one among the 108 Shiva temples in Kerala. It is believed that the pratishtha of Vadakkanappan was done by Parashurama.
The Upa Devatas worshipped in the temple are Ganapathy, Vishnu, Sastha, Yakshi and Nagas. Naga Pratishta has special significance here.
A unique vazhipadu or offering here is the Pitru Namaskaram. It is performed in respect of dead ancestors.
The temple is now maintained by the Kerala Urazma Devaswom Board.