Lydia, the Swiss Milkmaid (a.k.a. Lydia, ou la Laitière Suisse, or as Natalie, oder Das schweitzer Milchmädche) is a Demi-Caractère ballet in 2 acts, with choreography by Filippo Taglioni and music by Adalbert Gyrowetz.
First presented as Das schweitzer Milchmädche at the Theater am Kärntnertor, Vienna, Austrian Empire on Monday, October 8, 1821.