Keith Duckworth
| Keith Duckworth | |
|---|---|
| Born | David Keith Duckworth August 10, 1933 Blackburn, United Kingdom | 
| Died | December 18, 2005 (aged 72) Northampton, United Kingdom | 
| Occupation | Engineer | 
| Known for | Designing the Cosworth DFV engine | 
David Keith Duckworth (10 August 1933 – 18 December 2005) was an English mechanical engineer. He is most famous for designing the Cosworth DFV (Double Four Valve) engine, an engine that revolutionised the sport of Formula One.