Through the Looking Glass is a chamber opera by the Australian composer Alan John to a libretto by Andrew Upton, based on Lewis Carroll's 1871 book and on the life of Alice Liddell, the girl for whom Carroll wrote the story's 1865 prequel, Alice's Adventures in Wonderland. The work was commissioned by the Victorian Opera and the Malthouse Theatre in association with Opera Australia; it premiered on 20 May 2008 at the Merlyn Theatre (Malthouse Theatre). The performance time is approximately 70 minutes.