Migration to a new country can be very difficult for adolescents as they are also experiencing a critical transition into adulthood. The current study investigates cross-cultural transition issues facing Iranian immigrant adolescents living in Malaysia. Data were gathered from individual interviews with 100 Iranian adolescents (ages 14-18 years), who have lived in Malaysia for between 2 months and 5 years. Descriptive phenomenology qualitative research was used to explore the impact of the migration process on Iranian adolescents. Analysis revealed five major themes regarding participants’ life experiences in Malaysia: (a) initial expectations; (b) differences in ethnicity, religion, and beliefs; (c) communication barriers; (d) differences in personal evaluations; and (e) psychological issues. The results of this study clearly show that migration for Iranian adolescents in Malaysia is a time of unexpected challenges that may not be experienced by other migrant adolescents in other countries. Our findings contribute to the literature on the unique experiences of Iranian adolescents living in Malaysia and also build on the current research on adolescents who have recently immigrated. In addition, our results further uncover the process of immigration for individuals who are moving from a monocultural society (such as Iran) to a multicultural context (such as Malaysia).