The DB4 is a grand tourer that was produced by Aston Martin from 1958 until 1963. The "DB" designation came from Sir David Brown, who built up the company from 1947 onwards.

Aston Martin Lagonda Global Holdings PLC is a British manufacturer of luxury sports cars and grand tourers. Its predecessor was founded in 1913 by Lionel Martin and Robert Bamford. Steered from 1947 by David Brown, it became associated with expensive grand touring cars in the 1950s and 1960s, and with the fictional character James Bond following his use of a DB5 model in the 1964 film Goldfinger. Their grand tourers and sports cars are regarded as a British cultural icon.