Cadillac, formerly Cadillac's automotive division, is a division of general motors, headquartered in the United States, which sells luxury cars around the world. Its main markets are the United States, Canada and China, but Cadillac cars are distributed in 34 other markets around the world. Historically, Cadillac has been a leader in the field of luxury cars in the United States. In 2017, the sales volume of Cadillac in the United States was 156440, and the global sales volume was 356467.

Cadillac is one of the oldest car brands in the world, second only to General Motors Buick in the United States. The company was founded in 1902 by the remnants of Henry Ford company. The company is named after Antoine de la mothe Cadillac, who founded Detroit, Michigan. Cadillac's crest is based on his crest.

By the time general motors acquired the company in 1909, Cadillac had become one of the leading luxury car manufacturers in the United States. The complete interchangeability of its precision parts lays the foundation for the mass production of modern automobile. It is at the forefront of technological progress, with the introduction of a complete electrical system, collision free manual transmission and steel roof. The brand has developed three engines and its V8 has become the standard for the U.S. automotive industry.

Cadillac successfully proved the interchangeability of its parts in the reliability test in 1908, which made it the first American car to win the British Duva trophy and the Royal Automobile Club, which produced the company's slogan "world standard". In 1912, it won the trophy again for applying electric starting and lighting technology to mass production vehicles.