Nissan Motor Co. Ltd. is a Japanese multinational automobile manufacturer headquartered in Yokohama, Kanagawa, Japan. The company sells its vehicles under the Nissan and Infiniti brands, and formerly the Datsun brand, with in-house performance tuning products under the Nismo and Autech brands. The company traces back to the beginnings of the 20th century, with the Nissan zaibatsu, now called Nissan Group.

The automotive industry comprises a wide range of companies and organizations involved in the design, development, manufacturing, marketing, selling, repairing, and modification of motor vehicles. It is one of the world's largest industries by revenue.