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.

In 2012, he joined Civic Choice and was elected deputy on electoral district Trentino Alto Adige.