The canto (Italian pronunciation: [ˈkanto]) is a principal form of division in medieval and modern long poetry. The word canto is derived from Italian word for "song" or singing; which is derived from the Latin cantus, for "a song", from the infinitive verb canere—to sing. The use of the canto was described in the 1911 edition of the Encyclopædia Britannica as " a convenient division when poetry was more usually sung by the minstrel to his own accompaniment than read". There is no specific format, construction, or style for a canto and it is not limited to any one type of poetry.
Famous poems that employ the canto division are Dante's Divine Comedy (100 cantos), Camões' Os Lusíadas (10 cantos), Torquato Tasso's Gerusalemme liberata (20 cantos), Byron's Don Juan (17 cantos, the last of which is unfinished) and Ezra Pound's The Cantos (116 cantos).
The typical length of a canto varies greatly from one poem to another. The average canto in the Divine Comedy is 142 lines long while the average canto in Os Lusíadas is 882 lines long.