The temple is dedicated to Lord Mahavishnu in a peaceful form, symbolizing tranquility and divine protection.

Over 1500 years old, the temple also venerates Lord Ganapathi and Lord Shiva, highlighting its historical and spiritual significance.
Festivals
The Temple has a number of festivals. The important ones are :
Thrikkodiyettu Maholsavam
During the Thrikkodiyettu Maholsavam at the Kelamangalam Sree Mahavishnu Temple in Keraladityapuram, Thiruvananthapuram, several significant rituals are performed in the Kumbham month. The festival features Ganapathi Homam, Bhagavatha Parayanam, Nagarpooja, and Abhishekam, along with Narayaneeya Parayanam, which involves reciting the Narayaneeya text. The celebrations culminate with Arattu Ghoshayatra, a ceremonial procession, and Deeparadhana, where lamps are offered in devotion.
Thrikkarthika
During Thrikkarthika at the Kelamangalam Sree Mahavishnu Temple in Keraladityapuram, Thiruvananthapuram, the festival is celebrated with special poojas and rituals dedicated to Lord Mahavishnu. The day includes the lighting of numerous lamps, known as Deepa Vilakku, symbolizing divine illumination and seeking blessings. Devotees participate in prayers and offerings, creating a spiritually uplifting atmosphere at the temple.
Contact Address: Kelamangalam Sree Mahavishnu Temple, Keraladityapuram Road, Keraladityapuram, Uliyazhathura, Thiruvananthapuram, Kerala 695588
Phone Number: 0471 322 8454