The Bad Girl (Spanish:Travesuras de la niña mala, transl. The mischief of the bad girl) is a 2006 novel by Peruvian author Mario Vargas Llosa, who won the 2010 Nobel Prize in Literature. An English-language edition translated by Edith Grossman was published the following year.^[1][2][3]

Journalist Kathryn Harrison approvingly argues that the book is a rewrite (rather than simply a recycling) of the French realist Gustave Flaubert's classic novel Madame Bovary (1856).^[4] In Vargas Llosa's version, the plot relates the decades-long obsession of its narrator, a Peruvian expatriate, with a woman with whom he first fell in love when they were both teenagers.

• Harrison, Kathryn (14 October 2007), "Dangerous Obsession", The New York Times, retrieved 14 April 2008.