Professor Rod Ellis is Professor in the Department of Applied Language Studies and Linguistics at the University of Auckland, New Zealand. He has worked in Zambia, the UK, Japan, and the U.S.A for extended periods. He has published a number of books on second language acquisition and teacher education. He has also published EFL/ESL textbooks. His main interest lies in the application of second language theory and research to language teaching.

He is co-author of Analysing Learner Language, and author of Second Language Acquisition, SLA Research and Language Teaching, The Study of Language Acquisition, which won the English Speaking Union's Duke of Edinburgh Book Competition, Understanding Second Language Acquisition, which won the BAAL Book Prize, and Task-based Language Learning and Teaching, all published by Oxford University Press.