Sarah Grey Thomason (known as "Sally") is an American scholar of linguistics. She is a prolific contributor to academic journals and publications specializing in the field of linguistics, as well as a guest lecturer at different universities around the world and a speaker at international conferences. She was named the William J. Gedney Collegiate Professor of Linguistics at the University of Michigan in 1999, and received the highest honor granted by the University of Michigan to its faculty by being named the Bernard Bloch Distinguished University Professor of Linguistics in 2016. She was also Chair of the Department of Linguistics from 2010 to 2013. She is currently an associate editor for the Journal of Historical Linguistics, as well as part of the advisory board of the Journal of Language Contact.