William Marsden may refer to: William Marsden (diplomat) (1940–2019), former British Ambassador to Argentina and Costa Rica William Marsden (orientalist) (1754–1836), the British First Secretaries to the Admiralty. Also an orientalist, linguist and numismatist
William Marsden (sport shooter) (1860–1942), British Olympic sport shooter
William Marsden (surgeon) (1796–1867), English surgeon William Marsden (footballer, born 1871) (1871–1943), English footballer Billy Marsden (1901–1983), English international footballer William Milnes Marsden (1873–1956), British solicitor and philatelist
See also William Marston (disambiguation)