Horatio William Bottomley (23 March 1860 – 26 May 1933) was an English financier, journalist, editor, newspaper proprietor, swindler, and Member of Parliament. He is best known for his editorship of the popular magazine John Bull, and for his nationalistic oratory during the First World War. His career came to a sudden end when, in 1922, he was convicted of fraud and sentenced to seven years' imprisonment.