John William Logan (1845 – 25 May 1925), known as Paddy Logan, was a civil engineering contractor and Liberal Member of Parliament (MP) for Harborough in Leicestershire. He was the son of John Logan of Newport, Monmouthshire and educated at King's School, Gloucester. J. W. Logan was a successful railway contractor with the civil engineering firm of Logan and Hemingway. He moved to Leicestershire in 1876 to supervise a railway contract and lived near Market Harborough at East Langton Grange, where he gave the village a cricket ground and a hall. He also maintained a cottage home for the children of men killed on his works.