Sir Stephen John Bull, 2nd Baronet (11 October 1904 – 9 March 1942) was an English lawyer and baronet.
Bull was the son of the Right Hon. Sir William Bull, 1st Baronet MP, of Chelsea, London, a Conservative politician, as well as the brother of Anthony Bull.
He was educated at Gresham's School, Holt and New College, Oxford. He succeeded to his father's title in 1931.
Bull was admitted a solicitor in 1928, and in 1934 had offices at 3, Stone Buildings, Lincoln's Inn.
He was honorary solicitor to the Royal Life Saving Society, the Royal Society of St George, and the League of Mercy, Liveryman of the Worshipful Company of Mercers of the City of London, Governor of the Upper Latymer Foundation School, Vice-Chairman of South Hammersmith Conservative Association and a member of the Board of Management of the West London Hospital.