Tomorrowland (also known as Project T in some regions and subtitled A World Beyond in others) is a 2015 American science fiction film directed by Brad Bird with a screenplay by Bird and Damon Lindelof. The film is based on the themed land Tomorrowland from the Disney Parks and a story by Bird, Lindelof, and Jeff Jensen. It stars George Clooney, Hugh Laurie, Britt Robertson, Raffey Cassidy, Tim McGraw, Kathryn Hahn, and Keegan-Michael Key. In the film, a disillusioned genius inventor and a teenage science enthusiast embark to an intriguing alternate dimension known as "Tomorrowland", where their actions directly affect their own world.

Walt Disney Pictures originally announced the film in June 2011 under the working title 1952 and later retitled it to Tomorrowland after the Disney Parks theme land. In drafting their story, Bird and Lindelof took inspiration from the progressive cultural movements of the Space Age, as well as Walt Disney's optimistic philosophy of the future, notably his conceptual vision for the planned community known as EPCOT. Principal photography began in August 2013, with scenes shot at multiple locales in five countries.

Tomorrowland was released by Walt Disney Studios Motion Pictures in conventional and IMAX formats on May 22, 2015. The film, which received mixed reviews from critics, grossed $209 million worldwide and was considered a commercial failure for losing Disney $120–150 million at the box office.

Young boy Frank Walker attends the New York World's Fair to sell his prototype jet pack, but is rejected because it does not work. He is approached by the young girl Athena, who hands him an orange lapel pin with a blue "T" embossed on it, telling him to follow her onto Walt Disney's "It's a Small World" attraction at the Fair's Pepsi-Cola Pavilion. Frank obeys, sneaking onto the ride. There, the pin is scanned by a laser, and he is transported to Tomorrowland, a futuristic cityscape, where advanced robots fix his jetpack, allowing him to fly and join the secretive world.

In the present day, optimistic teenager Casey Newton repeatedly sabotages the planned demolition of a NASA launch site in Florida. Her father Eddie, a NASA engineer, faces losing his job. Casey is eventually caught and arrested. At the police station, she finds a pin in her belongings. Touching it, the pin transports her to Tomorrowland. Her adventure is cut short when the pin's battery runs out, leaving Casey stranded in a lake.

With help from her younger brother Nate, Casey finds a Houston memorabilia store related to the pin. The owners attack her when she is unable to divulge where she got the pin, insisting that Casey knows about a "little girl". Athena bursts in and defeats the owners, actually Audio-Animatronics, who self-destruct, blowing apart the shop. After Casey and Athena steal a car, Athena reveals she is also an animatronic, purposed to find and recruit people who fit the ideals of Tomorrowland. She then drops Casey off outside an adult Frank's house in Pittsfield, New York. The now reclusive, cynical Frank declines Casey's request to take her to Tomorrowland, having been banished from it years ago. Inside his house, Casey finds a probability counter marking the end of the world. Frank warns her that the future is doomed, but she disagrees, thus lowering the counter's probability.

Animatronic assassins arrive to kill Casey, but she and Frank escape, meeting Athena in the woods outside his house. Frank resents Athena for lying to him about her true nature, but reluctantly agrees to help them get to Tomorrowland. Using a teleportation device, the trio travel to the top of the Eiffel Tower. Frank explains that Gustave Eiffel, Jules Verne, Nikola Tesla, and Thomas Edison co-founded Plus Ultra, a secret society of futurists, creating Tomorrowland in another dimension, free to make scientific breakthroughs without obstruction. The trio use an antique rocket, called the Spectacle, hidden beneath the Eiffel Tower to travel to Tomorrowland.

There, they find Tomorrowland in a state of decay. David Nix, Tomorrowland's governor, greets them. They travel to a tachyon machine, invented by Frank, which accurately predicted the worldwide catastrophe. Casey refuses to accept the world will end, causing the future to temporarily alter. Frank attempts to convince Nix to listen, who refuses and intends to have the group leave Tomorrowland. Casey realizes the tachyon machine is telling humanity that the world will end, creating a self-fulfilling prophecy. They confront Nix, who admits he tried to prevent the future by projecting such images to humanity as a warning. Instead, they embraced the apocalypse, refusing to act to make a better future for their world.