This dissertation reports three studies on mental health and service utilization among Asian Americans, using nationally representative data from National Latino and Asian American Study (NLAAS). The first study reported in Chapter 2 examines the prevalence and pattern of past year mental health-related service use, including specialty mental health services, general health services, human or alternative services, and any type of mental health-related services, among Asian Americans. Guided by Andersen's health behavioral model, this study explores influencing factors to Asian Americans' use and choice of mental health services. Findings from this study indicate that Asian Americans significantly underuse mental health services and that they tend to choose specialty mental health services and human or alternative services when seeking treatments. Marital status, age at immigration, and past year psychiatric disorder are found significantly correlated to Asian Americans' use of each and any type of mental health services. Second study reported in Chapter 3 investigates the influence of immigration and perceived social status on lifetime and 12-month psychiatric disorder occurrence among Asian immigrants. Results of the study suggest that Asian immigrants' age at immigration and perceived social status in the U.S. are significantly associated with lifetime and 12-month psychiatric disorder occurrence. Respondents who immigrate to the U.S. during childhood and those who report lower perceived social status in the U.S. are more likely to experience lifetime and 12-month psychiatric disorders. Chapter 4 reports a study on the impacts of family cohesion and family conflict to past year mental health-related service utilization among Asian Americans. Primary findings from the study suggest the critical role of family cohesion and family conflict in influencing Asian Americans' mental health service use. Specifically, family cohesion is found to have significant correlation to Asian Americans' receipt of general health services and any type of mental health-related services. Family conflict is found as a significant predictor to the use of each and any type of mental health-related services, except specialty mental health services. The final chapter, Chapter 5, concludes this dissertation by providing summary of findings, discussion of limitations, and implications pertinent to social work practice, policy, and research.