The Post Office Girl (German: Rausch der Verwandlung, which roughly means The Intoxication of Transformation) is a novel by the Austrian writer Stefan Zweig.

It tells the story of Christine Hoflehner, a female post-office clerk in a small town near Vienna, Austria-Hungary, during the poverty-stricken years following World War I.

Claire, her aunt from America, decides to transform her into a socialite and to make her more elegant in order to fit in with the bourgeoise society she currently inhabits.

After Christine takes care of tying up loose ends in her workplace in preparation for their joint suicide, she then meets Ferdinand to go to the place where they have decided to kill themselves.

Lorna Bradbury of The Daily Telegraph wrote in 2009: "The Post Office Girl is a fine novel – and an excellent place to start if you are new to this great Austrian novelist.

"[1] John Banville reviewed the book in The Guardian: "The Post Office Girl is fierce, sad, moving and, ultimately, frightening.