John Joseph Gumperz (January 9, 1922[1] – March 29, 2013[2]) was an American linguist and academic. Gumperz was, for most of his career, a professor at the University of California, Berkeley. His research on the languages of India, on code-switching in Norway, and on conversational interaction, has benefitted the study of sociolinguistics, discourse analysis, linguistic anthropology, and urban anthropology.