Michael Charles Costin is a British engineer. Together with Keith Duckworth, he co-founded Cosworth Engineering, a producer of Ford-funded and sponsored engines. Drivers including Graham Hill, Jackie Stewart, Jochen Rindt, Emerson Fittipaldi, James Hunt, Mario Andretti, Alan Jones, Nelson Piquet, and Keke Rosberg won the Formula One World Championship using Cosworth DFV engines during the 1960s, 1970s and 1980s.