Lionel Corporation was an American toy manufacturer and holding company of retailers that was founded in 1900 and operated for more than 120 years. It started as an electrical novelties company. Lionel specialized in various products throughout its existence. Toy trains and model railroads were its main claim to fame. Lionel trains have been produced since 1900, and their trains were admired by model railroaders around the world for the solidity of their construction and the authenticity of their detail. During its peak years in the 1950s, the company sold $25 million worth of trains per year.

In 1969, the company sold their model train lines to General Mills. It continued to operate until 1993 as a holding company for their toy stores. In 2006, Lionel's electric train became the first electric toy inducted into the National Toy Hall of Fame. The model trains are still in production as Lionel, LLC.