Attila is an opera in a prologue and three acts by Giuseppe Verdi to an Italian libretto by Temistocle Solera, based on the 1809 play Attila, König der Hunnen (Attila, King of the Huns) by Zacharias Werner. The opera received its first performance at La Fenice in Venice on 17 March 1846.

Ezio's act 2 aria of heroic resolution È gettata la mia sorte ("My lot is cast, I am prepared for any warfare") is a fine example of a characteristic Verdian genre, and it achieved fame in its own time with audiences in the context of the adoption of a liberal constitution by Ferdinand II. Other contemporary comment praised the work as suitable for the "political education of the people", while, in contrast, others criticised the opera as "Teutonic" in nature.

Overall, the reception from the press on opening night was not as positive as that from the audience present. As Budden notes, "the Italian public had taken Attila to their hearts" and he adds that the Roman general Ezio's aria - Avrai tu l'universo, resta l'Italia a me ("You can have the universe, but leave Italy for me") - brought forth spontaneous cheers".

After its world premiere in 1846 in Venice, the opera went on to be produced in all of the major Italian cities (plus Barcelona, Lisbon, and Trieste), a total of over 25 productions, including one in Palermo under the title of Gli Unni e I Romani in 1855. One production in Como is recorded to have taken place in 1875, after which the opera appears to have disappeared in Italy, at least.

Attila was first produced in London in 1848 by Benjamin Lumley who, as impresario at Her Majesty's Theatre, had successfully presented Verdi's I masnadieri there in 1847. In his 1864 autobiography he notes that "none perhaps of Verdi's works had kindled more enthusiasm in Italy or crowned the fortunate composer with more abundant laurels than Attila. The Attila premiere featured Sophie Cruvelli, Italo Gardoni, Velletti, and Cruzzoni. The opera was first given in New York City in 1850.

In the 20th century, it was revived in concert performance during Venice Festival of 1951 with Mancini, Penno, Giangiacomo, Guelfi, and Italo Tajo, under the conductor Carlo Maria Giulini; and at Sadler's Wells in London in 1963 (with an English libretto), with Rae Woodland, Donald Smith, Mossfield, and Donald McIntyre, with Muir Mathieson conducting. There was a Rome revival a year later, then productions in Trieste in (1965), in Buenos Aires in (1966), in Berlin in (1971), and in 1972 Attila was performed at the Edinburgh Festival and in Florence.