This research sheds light on the migrants' preservation of their homeland's culture  such as language, customs, values, norms, tool, products, and organizations in the unaccustomed earth. The Namesake is Lahiri's first novel. It was published in 2003. Jhumpa Lahiri currently lives in New York, she was born to Bengali Indian parents in London.  Both Indian and American cultures are rooted in her. She depicts the voice of Indians in India and Indian immigrants in America very passionate and skillfully. In her first novel The Namesake, she writes about her Bengali culture quite authentically, although she does not live there. Some of novel's themes relate to family, growing up, traditions and immigrant's experience. Lahiri has shown through the novel the cultural identity which interfaces people who are born in west, but belong originally to a country which westerns considered as the third world.            It also sheds light on Indian culture. India is a great country with a great culture. Indian people respect this culture and follow its customs and traditions. This thesis aims at discovering Indian culture and it sheds light on the suffering of Indian-American children with their double nationalities. It aims at establishing a relationship between protagonists' identity and cultural assimilation with the host lands.