The Ford Mustang Mach 1 is a performance-oriented option package of the Ford Mustang muscle car, originally introduced in August 1968 for the 1969 model year. It was available until 1978, returned briefly between 2003 and 2004, and most recently between 2021 and 2023.

The Ford Mustang is a series of American automobiles manufactured by Ford. In continuous production since 1964, the Mustang is currently the longest-produced Ford car nameplate. Currently in its seventh generation, it is the fifth-best selling Ford car nameplate. The namesake of the "pony car" automobile segment, the Mustang was developed as a highly styled line of sporty coupes and convertibles derived from existing model lines, initially distinguished by "long hood, short deck" proportions.