Luigi Rizzi is Professor of linguistics at the University of Siena, and Honorary Professor at the University of Geneva.

He is Principal Investigator of the project Syntactic Cartography and Locality in Adult Grammar and Language Acquisition (SynCart), funded by an ERC Advanced Grant at the University of Geneva.

He studied at Scuola Normale Superiore and at the University of Pisa. 

He was on the faculty of Departments of Linguistics in European and American Universities: in particular, he was Associate Professor at MIT, Professor at the University of Geneva, Visiting Professor at the University of Massachusetts at Amherst, at UCLA, and at Ecole Normale Supérieure (Paris).

Rizzi is honorary member of the Linguistic Society of America, Corresponding Fellow of the British Academy, member of Academia Europaea, honorary member of the American Academy of Arts and Sciences. He was awarded the International Research Chair Blaise Pascal (Paris) in 2011.

His research interests include syntactic theory and comparative syntax; in particular, he contributed to the development of the parametric approach to syntactic comparison, to the theory of locality, to the study of syntactic representations, with special reference to the cartography of syntactic structures. He also works on language acquisition, with particular reference to the development of morphosyntax in the child, and on the role of the theory of locality in language development.