The Packard Twelve was a range of V12-engined luxury automobiles built by the Packard Motor Car Company in Detroit, Michigan. The car was built from model year 1916 until 1923, then it returned 1933 until 1939. As a sign of changing times, the majority of second generation Packard Twelves received standard bodywork, with custom bodywork gradually losing favor. Many of the custom cars were actually only "semi-customs", with Dietrich assembling Packard-made bodies with special touches.

The Packard Six was a series of luxury automobiles built over several generations by Packard from 1913 until 1947. The name was originally used to describe the car in general terms, while Series numbers were initially used and changed every year to denote wheelbases, then the number classification changed as market conditions changed so as to keep competitive with other luxury brands.