Hosea A. Mann, Jr. (July 13, 1858 – September 7, 1948) was a Vermont lawyer and politician. Mann born in Wilmington, Vermont, on July 13, 1858, the son of Hosea and Maria (Grousbeck) Mann. Mann was educated in the common schools and at the Brattleboro Academy and Eastman's Business College in Poughkeepsie, New York. Mann was elected to the Vermont House of Representatives in 1886, 1888, and 1890, and served as Speaker of the House from 1890 to 1892. He died in Brattleboro, Vermont while staying at the Brattleboro Retreat, to which he had been admitted three weeks previously.