Juno is a 2007 comedy-drama film directed by Jason Reitman and written by Diablo Cody. Ellen Page stars as the title character, an independent-minded teenager confronting an unplanned pregnancy and the subsequent events that put pressures of adult life onto her. Michael Cera, Olivia Thirlby, J. K. Simmons, Allison Janney, Jennifer Garner, and Jason Bateman also star. Filming spanned from early February to March 2007 in Vancouver, British Columbia. It premiered on September 8 at the 2007 Toronto International Film Festival, receiving a standing ovation.

When a teenage girl is faced with an unexpected pregnancy, she enlists the aid of her best friend in finding the unborn child a suitable home in this coming-of-age comedy drama from Thank You for Smoking director Jason Reitman. Juno (Ellen Page) may seem wise beyond her years, but after sleeping with classmate Bleeker (Michael Cera), the pregnant teen quickly realizes how little she really knows about life. Thankfully, Juno has been blessed with parents (J.K. Simmons and Allison Janney) who trust their daughter's judgment, and a best friend named Leah (Olivia Thirlby), who's always willing to help out in a pinch. With a little help from Leah, Juno soon comes into contact with Mark (Jason Bateman) and Vanessa (Jennifer Garner) -- an affluent suburban couple who have been unable to conceive a child of their own. Mark and Vanessa seem like they would make great parents, and are eager to adopt Juno's unborn child. Now, as adolescent Juno is faced with a series of very adult decisions, she will draw on the support of her family and friends in order to discover who she truly is, and discover that one bad choice can have a lifetime of consequences.

Juno received positive reviews from critics, many of whom placed the film on their top ten lists for the year. Has there been a better performance this year than Ellen Page's creation of Juno? I don't think so. Ebert went on to place Juno at number one on his annual best of list. The film also ranks at number 463 in Empire magazine's 2008 list of The 500 Greatest Movies of All Time. Juno MacGuff also ranked number 56 on Empire's list of The 100 Greatest Movie Characters of All Time. Paste Magazine named it one of the 50 Best Movies of the Decade (2000–2009), ranking it at number 15. In June 2010, Entertainment Weekly named Juno one of the 100 Greatest Characters of the Last 20 Years.

Juno won the Academy Award for Best Original Screenplay and earned three other Oscar nominations, including Best Picture and Best Actress for Page. The film's soundtrack, featuring several songs performed by Kimya Dawson in various guises, was the first chart-topping soundtrack since Dreamgirls and 20th Century Fox's first number one soundtrack since Titanic. Juno earned back its initial budget of $6.5 million in twenty days, the first nineteen of which were when the film was in limited release. It went on to earn $231 million.