This paper attempts to examine cultural essentialism and cultural hybridism regarding Native Americans cultural identity in Linda Hogans Power and Leslie Marmon Silkos Ceremony. The two novels have a common feature that the Omishto in Power and Tayo in Ceremony seek their identity respectively during the journeys of their lives, but Omishto is inclined to cultural essentialism and Tayo cultural hybridism. To be concrete, it examines assimilationism in assimilation policy and resistance against it in two novels. And then it analyzes cultural nationalism through the relation between Omishto and Ama Eaton in Power, and examines cultural hybridism through medicine man Betonies story telling in Ceremony.