Lagonda is a British luxury car brand established in 1906, which has been owned by Aston Martin since 1947. The trade-name has not had a continuous commercial existence, being dormant several times, most recently from 1995 to 2008, 2010 to 2013, and 2016 onward.

The Lagonda company was founded in 1906 in the UK in Staines, Middlesex, by American-born Wilbur Gunn (1859–1920), a former opera singer.  He became a British national in 1891 and worked as a speedboat and motorcycle engineer in Staines.  He named the company after the Shawnee settlement of Lagonda in modern-day Springfield, Ohio, the town of his birth.  This is a glacially eroded limestone gorge of much beauty.  Historically, the area played a major role in the Treaty of Easton and the aligning of the Shawnee tribe with the British during the French and Indian War.

Gunn had built motorcycles on a small scale in the garden of his house in Staines with reasonable success, including a win on the 1905 London–Edinburgh trial.  In 1907 he launched his first car, the 20hp, six-cylinder Torpedo, which he used to win the Moscow–St. Petersburg trial of 1910.  This success produced a healthy order for exports to Russia which continued until 1914.  In 1913, Lagonda introduced an advanced small car, the 11.1, with a four-cylinder 1,099 cc engine, which, by 1914, featured a panhard rod suspension and a rivetted unibody body and the first ever fly-off handbrake.