A Ferris wheel is an amusement ride consisting of a rotating upright wheel with multiple passenger-carrying components attached to the rim in such a way that as the wheel turns, they are kept upright, usually by gravity. Some of the largest modern Ferris wheels have cars mounted on the outside of the rim, with electric motors to independently rotate each car to keep it upright. These cars are often referred to as capsules or pods.

The original Ferris Wheel, sometimes also referred to as the Chicago Wheel, was designed and built by George Washington Gale Ferris Jr. as the centerpiece of the Midway at the 1893 World's Columbian Exposition in Chicago, Illinois. Since its construction, many other Ferris wheels have been constructed that were patterned after it.