C
- Gerolamo Cardano (1501–1576) - Numerous mechanical inventions including the combination lock, gimbal, Cardan shaft, and Cardan grille
- Nicolas Léonard Sadi Carnot (1796–1832) - physicist and military engineer
- Willis Carrier (1876–1950) - Pioneered the design and manufacture of modern air conditioning systems
- Edmund Cartwright (1743–1823) - Inventor of the first commercial power loom
- George Cayley (1773–1857) - Aerodynamics pioneer and founding member of the British Association for the Advancement of Science
- Colin Chapman (1928–1982) - Automotive engineer, founder of Lotus Cars
- André Citroën (1878–1935) - Founder of Citroën automotive, known for application of double-helical gears
- Joseph Clement (1779–1844) - Best known as the maker of Babbage's Difference Engine
- Dugald Clerk (1854–1932) - Inventor of the two-stroke engine
- Demetrius Comino (1902–1988) - Inventor of Dexion slotted angle steel construction system
- Thomas Russell Crampton (1816–1888) - Inventor of the Crampton locomotive and an early advocate of the Channel Tunnel
- Nicolas-Joseph Cugnot (1725–1804) - Early developer of a self-propelled (steam) vehicle
Read more about this topic: List Of Mechanical Engineers