William William Van Wyck (9 August 1777-27 August 1840) was a member of the US House of Representatives (DR-NY 4) from 4 March 1821 to 3 March 1823 (succeeding Randall S. Street and preceding Joel Frost) and from NY-5 from 4 March 1823 to 3 March 1825 (succeeding Walter Patterson and preceding Bartow White). Born in Fishkill, he was a farmer before entering politics, and he later moved to Sudley, Virginia before returning to Dutchess County and dying in 1840.