The Buick Y-Job was the auto industry's first concept car, produced by Buick (a division of General Motors), in 1938. Designed by Harley J. Earl, the car had power-operated hidden headlamps, a "gunsight" hood ornament, wraparound bumpers, flush door handles, and prefigured styling cues used by Buick until the 1950s.

The car itself was actually driven for a number of years by Harley Earl, until he replaced it with a 1951 model car. Sometime after that, the car was restored at the Henry Ford Museum, until 1993 when it was returned to the GM Design Center.

The "Y" in the name has several explanations:

All experimental cars were called "X", so Earl simply went to the next letter in the alphabet

The "Y" designation was selected by Earl because it was used extensively in the aviation industry denoting the most advanced prototypes.