The current paper aims at finding out the attitude of Kazi Nazrul Islam and his treatment of religious elements in his poetic works in a vivid manner. Nazrul is the most famous writers of modern period in the Indian sub-continent. He is also the major Bengali poet of the first half of the twentieth Century Bengali literature. Religious themes are abundant in his poetic works. They had great contribution of literature in his time. He came from an ordinary family but there are lots of loftiness and grandeur in his writings full of religious and spiritual themes. His religious poems have still that universal appeal from their time to till now. Kazi Nazrul Islam was known as Rebel poet. He wrote many religious poems of his own culture that contain religious and spiritual contents and thoughts. Kazi Nazrul Islam wrote about Islam and its relevance along with other religions.