Bruno Migliorini (19 November 1896 - 18 June 1975) was an Italian linguist and philologist. He was the author of one of the first scientific histories of Italian language and was president of the Accademia della Crusca.
Migliorini was born at Rovigo.
He studied at Ca' Foscari in Venice, then in the faculty of Letters of the University of Padua. After the Italian defeat in the Battle of Caporetto (1917), his family was forced to move in Rome. Here, at the University La Sapienza, he met his masters, the philologists Ernesto Monaci and Cesare De Lollis, and, from 1920, collaborated to La Cultura, a magazine whose founders included De Lollis himself and Giovanni Gentile.
He was chief editor of the Enciclopedia Italiana from 1930 to 1933, when he succeeded Angelo Monteverdi as professor of Romance languages and literatures at the University of Fribourg, where Migliorini remained until 1938. Thenceforth he was the first professor of History of Italian Language, a newly created position at the University of Florence, which he kept until 1967. In 1939, together with Giacomo Devoto, he founded the magazine Lingua nostra ("Our Language").
From 1949 to 1963 Migliorini was the president of the Accademia della Crusca and, from 1958, he was a member of the Accademia dei Lincei. He was one of the main Italian experts of Esperanto.
He died at Florence in 1975.