Kulasekharam Sankaranarayana temple is located at Thampuran Lane, Kulasekharam, in Thiruvananthapuram, Kerala. The temple is dedicated to the combined form of Shiva and Vishnu. The shrine lies on the banks of Karamana River. The temple is famous in the region for performing Karkidaka Vavu Bali and Pitru Tarpanam rituals dedicated to dead forefathers in Karkidakam month (July – August).
The temple has vatta sreekovil, nalambalam, namaskara mandapam, shrines of upa devatas, and kodimaram (flag pole).
The temple holds its annual festival in February month and is not for ghosha yatra, caparisoned elephants, melam, traditional temple performing art forms and music. Both Vaishnava and Shaiva rituals and pujas are part of the festival.
The shrine also observes Shivratri, Vishu, Ramayana Masam, Vau bali, various pujas and rituals in Chingam Masam, Thiruvonam, Mandala Makaravilakku kalam and Thrikarthika festival.