Lorenzo Dellai (born 28 November 1959) is an Italian politician. He is a former member of the Chamber of Deputies, former mayor of Trento, former governor of the Autonomous Province of Trento, and former president of the region of Trentino-Alto Adige/Südtirol.
Born in Trento, Dellai was elected mayor of the city for the first time in 1990 and re-elected in 1995. In 1998, Dellai founded the Daisy Civic List, a regionalist political party active in Trentino.
Dellai has been the President of the Province of Trentino from 1999 to 2012, and the President of Trentino-Alto Adige/Südtirol from 2006 to 2008. In 2012, he joined Civic Choice and was elected deputy on electoral district Trentino Alto Adige.