Henry Slatter (15 October 1830 – 5 July 1902) was a British trade union leader.
Born in Cheltenham, Slatter moved with his family to Birmingham when he was five years old, and was educated at a Unitarian Mutual Improvement School.
[1] Slatter was a founder of the Typographical Association, and joined its executive after its headquarters moved to Manchester in 1863.
Under his leadership, the union began offering benefits to members who could not find work, and started a pension scheme.
He resigned from the Parliamentary Committee in 1890, in protest at the victory of the supporters of New Unionism in that year's votes.