Une éducation manquée (An Incomplete Education) is an opérette in one act and nine scenes by Emmanuel Chabrier. The French libretto is by Eugène Leterrier and Albert Vanloo. Composed in 1878–79, the work, which is set in the 18th century, is in a lively, light operetta style in which Chabrier excelled and had perfected in L’étoile a year or so earlier. It was much admired by Ravel, Hahn and Messager, among others.