List of Mechanical Engineers - G

G

• Emile Gagnan (1900–1979) - Co-inventor (with Cousteau) of the diving regulator used in SCUBA equipment
• Blasco de Garay (1500–1552) - Early steam power pioneer and developer of paddle wheels as a substitute for oars
• Herbert William Garratt (1864–1913) - Inventor of the Garratt system of articulated locomotives
• Henry Laurence Gantt (1861–1919) - Inventor of the Gantt chart
• Daniel Gooch (1816–1889) - first chief mechanical engineer of the Great Western Railway
• John Viret Gooch (1812–1900) - locomotive superintendent of the London and South Western Railway
• J.E. Gordon (1913–1998) - Engineering author and developer of composite materials
• John Josiah Guest (1785–1852) - Manager of the Dowlais Ironworks, Wales
• Nigel Gresley (1876–1941) - Steam locomotive engineer, developed Gresley conjugated valve gear
• Goldsworthy Gurney (1793–1875) - Inventor and steam power pioneer, known for his Gurney Steam Carriage
• Ravi Grover (1949- )- India nuclear scientist and Mechanical Engineer. He is widely given credit of building India's Nuclear bomb.