Research on Asian American acculturation and ethnic/racial identity, although still in development, has evolved and progressed over the past few decades. Researchers are now developing and using more complex and advanced methods of examining these issues in a culturally and ethnically heterogeneous population. Indeed, this special issue of Cultural Diversity and Ethnic Minority Psychology demonstrates the diverse state-of-the-art research in this area. The coeditors of the special issue highlight themes and specific contributions to the literature for each article.