The population of Chengannur mainly practices Hinduism and Christianity. Muslims are also found in the M.C. Road Mulakuzha region of the town. Most of Muslims living at Kollakadavu and Mannar areas.

Mahadeva Temple, Chengannur
Pazhaya Suriyani Pally (Old Syrian Church)
St. Mary's Orthodox Cathedral, Puthencavu
India Pentecostal Church of God,Chengannur
St.George Orthodox Catholicate Simhasana Church Piralassery