[3] Attesting to the presence of Christianity is one of the earliest pieve (parish) of the diocese, Sant'Andrea di Bigonzo, which dates from the fourth century.

In 1586, Bishop Marco Antonio Mocenigo (1586–1597) and Cardinal Enrico Caetani, the papal legate in Bologna, conducted the foundation ceremonies for the episcopal seminary in Ceneda.

[18] Pope Pius VII, therefore, issued the bull "De Salute Dominici Gregis" on 1 May 1818, embodying the conclusions of arduous negotiations.

The Vatican, which had lost the Papal States to the new Kingdom of Italy, was not inclined to honor the king, and therefore kept the name Ceneda as the title of the diocese.

In World War I, the last major campaign of Italian troops against the Austrian Empire was fought near Vittorio between 24 October and 4 November 1918.

Just before the beginning of the Second World War, the Vatican recognized the change of name which had taken place 16 years earlier, and adopted the title of Diocese of Vittorio Veneto.

[21] Within the confines of the diocese is the Basilica of Motta di Livenza, built near the spot where Giovanni Cigana reported the Blessed Virgin Mary appeared to him on March 9, 1510 during his praying of the rosary.

[22] She was said to have asked him and the inhabitants of the area to fast as an act of repentance for sin for at least three consecutive Saturdays, pray to God for mercy, and to build a basilica on the site so that people could come for prayer.

Pope Julius II, approving of the devotion of the Observant Franciscans in wishing to build a convent to service the cult of the Virgin Mary, granted their petition on 15 August 1510, the feast of the Assumption.