Sir John Wolfe Barry, the youngest son of famous architect Sir Charles Barry, was an English civil engineer of the late 19th and early 20th century. His most famous project is Tower Bridge over the River Thames in London which was constructed between 1886 and 1894. After receiving a knighthood in 1897, he added "Wolfe" to his inherited name in 1898 to become Sir John Wolfe Barry.

Tower Bridge is a Grade I listed combined bascule and suspension bridge in London, built between 1886 and 1894, designed by Horace Jones and engineered by John Wolfe Barry with the help of Henry Marc Brunel. It crosses the River Thames close to the Tower of London and is one of five London bridges owned and maintained by the City Bridge Foundation, a charitable trust founded in 1282.