Martha Beatrice Webb (née Potter; 22 January 1858– 30 April 1943) was an English socialist, economist and reformer, usually referred to in the same breath as her husband, Sidney Webb. Although her husband became Baron Passfield in 1929, she refused to be known as Lady Passfield. In H.G. Wells's The New Machiavelli (1911), the Webbs, as 'the Baileys', are unmercifully lampooned as short-sighted, bourgeois manipulators. The Fabian Society, of which Wells was briefly a member (1903-08), fares no better in his estimation.