Walt Disney's Carousel of Progress is a rotating theater Audio-Animatronics stage show attraction in Tomorrowland at the Magic Kingdom theme park at the Walt Disney World Resort in Bay Lake, Florida, just outside Orlando. Created by Walt Disney and WED Enterprises as the prime feature of the General Electric (GE) Pavilion for the 1964 New York World's Fair, the attraction was moved to Tomorrowland at Disneyland in Anaheim, California as Carousel of Progress, and remained there from 1967 until 1973. It was replaced in Disneyland by America Sings in 1974, and reopened in its present home in the Magic Kingdom in 1975.

Steeped in both nostalgia and futurism, the attraction's premise is an exploration of the joys of living through the advent of electricity and other technological advances during the 20th century via a "typical" American family. To keep it current with the times, the attraction has been updated five times (in 1967, 1975, 1981, 1985, and 1994), and has had two theme songs, both written by the Sherman Brothers, Disney's Academy Award-winning songwriting team.

The Carousel of Progress holds the record as the longest-running stage show in the history of American theater. It is one of the oldest attractions in the Walt Disney World Resort. It is also the oldest attraction at Walt Disney World to have been worked on by Walt Disney.

The attraction begins with a brief introduction about Walt Disney's idea for the attraction's debut at the 1964-1965 New York World's Fair and how he always had a passion for progress. Regarded as the longest-running stage show in American theater history, the theater then begins to rotate for each act to the theme song "There's a Great Big Beautiful Tomorrow" by the Sherman Brothers.

The first act is set on Valentine's Day, "right around the turn of the century". The father of the family, John, is sitting on a wooden rocking chair in his home, his dog, Rover, lying on the floor. He mentions that two brothers in North Carolina are working on a "flying contraption" but comments it will never work, followed by mentions of the new inventions and technological achievements of the day. After he shows off the new technology, he calls to his wife, Sarah, who is ironing in the room to John's right. The two discuss how Thomas Edison is working on an idea for "snap-on electric lights", to which Sarah comments "no more kerosene, no more gas" will be needed to illuminate rooms.

She also shows her new "wash-day marvel" that helps her do laundry in five hours, instead of two days, and she needs to get the laundry off the line before it starts raining. John initially denies that it is about to rain as his lumbago hasn't acted up, but is immediately proven wrong. Shortly after, the family's son, James, begins to talk from the right room and is scolded for using his father's Stereoscope without permission. James is watching Little Egypt dancing the "Hootchie-Cootchie". John comments that she is going to be the star of the upcoming World's Fair, and that James better put the Stereoscope away before his mother finds it. As John and James finish talking, John tells talks about owning "one of those new talking machines", after which, the family's grandmother appears on the left room, having fallen asleep while listening to the phonograph. John's attention is then drawn to a room on the right, where his daughter, Patricia, is getting ready to go to a Valentine's Day dance on the other side of town. John explains that she will be taking one of the new "horseless trolleys", before telling her that she better be home by 9 o'clock. He then mentions he's going to take one of the said trolleys downtown to have a root beer, which he explains is just a sarsaparilla with a new name.

The second act is set in the "Roarin' Twenties". John is once again sitting in his kitchen, this time on a smaller kitchen chair on Independence Day. Wires and new electric machines are all over the room. He says things have changed a lot in the last twenty years. He proceeds to tell guests the new accomplishments of the era, such as Charles Lindbergh about to fly over the Atlantic Ocean, sports stadiums being built all over the United States, regarding Babe Ruth as the country's best baseball player, advertisements for a film, where Al Jolson will talk and sing, electric starters replacing cranks in automobiles, and travel time from New York to California in three days.

John then tells guests that Thomas Edison has brought electricity to his home, after which, the electrical appliances all turn on at the same time, blowing a fuse, shutting the power in the house and the neighborhood. John then tells his son, Jimmy, to go put in a new fuse and power is restored. John's wife, Sarah, who is sitting on the front porch, is sewing a George Washington costume for John to wear to the town's Independence Day celebration, as her Ladies Club is in charge of the festivities. John tells the guests that the whole family will be performing in their presentation, with John and Sarah going as George and Martha Washington. Sarah is happy electric lights can be installed on the porch. Sarah tells John that Jimmy has volunteered to pick the music for the celebration. Jimmy then appears with his grandfather in the left room, dressed in a colonial outfit and standing next to a radio, which is playing patriotic music.