B
- Charles Babbage (1791–1871) - Creator of the Difference Engine
- George Herman Babcock (1832–1893) - Co-invented an improved safety water tube steam boiler, co-founder of Babcock & Wilcox
- Joseph Cyril Bamford - Founder of the JCB company, manufacturing heavy plant, and especially backhoes
- Eugenio Barsanti (1821–1864) - Early developer of internal combustion engine
- Henry Bessemer (1813–1898) - Best known as the creator of the Bessemer Process
- Karl Benz (1844–1929) - Generally regarded as the inventor of the gasoline-powered automobile, founder of Mercedes-Benz
- Keith Black - American high performance automobile engineer
- John Blenkinsop (1783–1831) - Steam locomotive pioneer, developed rack and pinion railway system
- Thomas Bouch (1822–1880) - Railway engineer, helped develop the roll-on/roll-off train ferry
- Matthew Boulton (1728–1809) - Steam engineer, associate of James Watt
- Joseph Bramah (1748–1814) - Hydraulic power pioneer and inventor of the hydraulic press
- Isambard Kingdom Brunel (1805–1859) - Design contributions include the Great Western Railway and the SS Great Eastern
- William Brunton (1777–1851) - Early steam power pioneer, inventor of the Brunton's Mechanical Traveller
- Oliver Bulleid - Railway engineer.
- David Bushnell (1742–1824) - Creator of the Turtle, credited as the first military submarine
Read more about this topic: List Of Mechanical Engineers