Datsun Car Logo

Datsun was an automobile marque. The name was created in 1931 by the DAT Motorcar Co. for a new car model, spelling it as "Datson" to indicate its smaller size when compared to the existing, larger DAT car. Later, in 1933 after Nissan Motor Co., Ltd. took control of DAT Motorcar Co., the last syllable of Datson was changed to "sun", because "son" also means "loss" (損) in Japanese, and also to honour the sun depicted in the national flag, hence the name "Datsun" : Dattosan (ダットサン, Dattosan?).[1] Nissan phased out the Datsun brand in March 1986. The Datsun name is most famous for the sports cars referred to as the Fairlady roadsters and later the Fairlady (240Z) coupes.

 Before the Datsun brand name came into being, an automobile named the DAT car was built in 1914, by the Kaishinsha Motorcar Works (快進自動車工場, Kaishin Jidōsha Kōjō?), in the Azabu-Hiroo District in Tokyo. The new car's name was an acronym of the company's partners' surnames:

Kenjiro Den (田 健次郎, Den Kenjirō)
Rokuro Aoyama (青山 禄朗, Aoyama Rokurō?
Meitaro Takeuchi (竹内 明太郎, Takeuchi Meitarō).

Datsun - Wikipedia