John Fowler, 1st Baronet

Sir John Fowler, 1st Baronet (15 July 1817 – 20 November 1898) was an English engineer specialised in the construction of railways and railway infrastructure. During the Victorian era, he was engineer for the world's first underground railway, the London's Metropolitan Railway.

In 1862, John Fowler, who was showing the progress of the underground railway to Charles Pearson and his wife, was present when the body of Robert Waugh was discovered on the construction site.