The Packard 300 is an automobile built and sold by the Packard Motor Car Company of Detroit, Michigan for model years 1951 and 1952. The 300 represented the upper mid-range Packard model and provided better appointments than the Packard 200 or the Packard 250 models, and replaced the Packard Super Eight. The Packard Patrician 400 became the top level "senior" Packard replacing the Custom Super Eight. The 300 was positioned against the Buick Roadmaster, Cadillac Series 61, Chrysler Saratoga, Frazier Manhattan and Lincoln Cosmopolitan.

The Packard Super Eight was the larger of the two eight-cylinder luxury automobiles produced by the Packard Motor Car Company of Detroit, Michigan. It shared frames and some body types with the top model Packard Twelve. The 1933-1936 Packard Super Eight was a big classic. In 1937, it was reduced to a smaller and lighter design. Following the discontinuation of the Sixteenth Series Twelve after the 1939 model year, a new Custom Super Eight One-Eighty was derived from the Super Eight as the new top car range. The Super Eight was renamed the Super Eight One-Sixty starting a naming convention change in 1940. These two models shared most mechanical components including the 160 HP straight Eight engine and continued to be regarded as the Senior Packard.