Ofelia Zepeda (Tohono O'odham), AILDI director, is a Regents' professor of linguistics and affiliate faculty in American Indian Studies at the University of Arizona. She teaches Tohono O'odham language courses and survey courses on American Indian languages. Her research areas include language variation, language policy, and issues of endangered languages. She has published numerous articles in these areas. She is also author of The Tohono O'odham Grammar and of two books of poetry, much of it written in the O'odham language. Dr. Zepeda is also the recipient of a MacArthur Fellowship for her work on Indigenous languages. She has served on numerous boards and is currently a trustee of the Tohono O'odham Community College. Dr. Zepeda has been involved in AILDI practically since its inception as an instructor and founding co-director. Her breadth of experience in the field of language revitalization continues to guide the institution.