Don Juan, also known as Don Giovanni (Italian), is a legendary, fictional Spanish libertine who devotes his life to seducing women.

In English literature, Don Juan, written from 1819 to 1824 by the English poet Lord Byron, is a satirical, epic poem that portrays the Spanish folk legend of Don Juan, not as a womaniser as historically portrayed, but as a victim easily seduced by women. As genre literature, Don Juan is an epic poem, written in ottava rima and presented in 16 cantos. Lord Byron derived the character of Don Juan from traditional Spanish folk legends; however, the story was very much his own. Upon publication in 1819, cantos I and II were widely criticized as immoral because Byron had so freely ridiculed the social subjects and public figures of his time. At his death in 1824, Lord Byron had completed 16 of 17 cantos, whilst canto XVII remained unfinished.