Henry Halliday Sparling (1860 – 9 September 1924) was a British journalist and socialist activist.
He began writing for Progress in 1884, and joined the Socialist League, serving on its executive, including a stint as secretary, and assisting William Morris with editing Commonweal from 1885 to 1890.
[2] Sparling disassociated himself from the Socialist League along with Morris, as it became dominated by anarchists, and instead found work as a sub-editor for the People's Press, moving to the Worker's Cry in 1891.
In 1894, Sparling moved to Paris as a correspondent for the Weekly Times and Echo and also the Clarion, returning to London in 1910.
In 1924, his book The Kelmscott Press and William Morris was published, and he died later in the year.