Ingrid Piller is Distinguished Professor of Applied Linguistics at Macquarie University, Sydney, where she previously served as Executive Director of the Adult Migrant English Program Research Centre (AMEP RC). Over the course of her international career, she has also held appointments at universities in Germany, Switzerland, United Arab Emirates and USA. She is a Fellow of the Australian Academy of the Humanities and recipient of a 2018 Anneliese Maier Research Award.

Ingrid Piller is an applied sociolinguist with research expertise in intercultural communication, language learning, multilingualism, and bilingual education. She has published, lectured and consulted widely in these areas.

Ingrid Piller is the author of Linguistic Diversity and Social Justice (Oxford University Press, 2016), which won the 2017 Prose Award in the Language and Linguistics category and the 2017 BAAL Book Prize. She is also the author of the bestselling Intercultural Communication (Edinburgh University Press, 2nd ed., 2017) and over 400 other publications.

Ingrid Piller is a member of the Australian Research Council (ARC) College of Experts, served as editor-in-chief of the international sociolinguistics journal Multilingua (De Gruyter Mouton; 2013-2022) and edits the sociolinguistics portal Language on the Movethrough which many of her publications and those of her team, including their research blog, can be accessed. She tweets about linguistic diversity @lg_on_the_move.