John Harvey Lewis (1814 – 23 October 1888) was an Irish-born lawyer and Liberal politician who sat in the House of Commons of the United Kingdom from 1861 to 1874.
Lewis was the son of William Lewis of Harlech, County Dublin and his wife Dora Cassidy, daughter of John Cassidy of Monasterevin, County Kildare.
He was educated at Trinity College, Dublin graduating BA in 1835 and MA in 1838.
[2] He was described as "in favour of the principle of non-intervention and opposed to the present pressure that the income-tax has upon professional men and traders.
Jane Isabella Lewis died in 1904 but under the terms of her will a legacy was later used to fund the construction of a private ward at the Royal Victoria Eye and Ear Hospital in Dublin.