A wagon (in old British English waggon) is a wheeled vehicle, ordinarily with four wheels, usually pulled by an animal such as a horse, mule or ox, which was used for transport of heavy goods in the past.

A wagon is also a large wheeled container that is used for transporting goods – as opposed to passengers – on a railway, thus pulled by a locomotive. The American English term for this is also a freight car; an alternative in British English is a truck, though this can also be used for transport of animals.

In modern usage, a wagon can refer to a type of automobile also known as the station wagon.

See also 

coach, carriage, covered wagon , estate car, station wagon.

A wagon can also refer to a toy--it has the same structure as the larger wagon (a box on wheels), but with an open top and a much smaller size. A child's wagon is traditionally painted red. An average wagon is able to seat one child, and is generally propelled by human power through a handle at the front. Some famous brands are Radio Flyer and Red Rider .