Henry Mann (1905–2000) was a mathematician.

Henry Mann is also the name of:

Henry F. Mann, inventor and blacksmith Harry Mann (Henry Willoughby Mann, 1873–1952), Australian police officer and politician Henry James Montague (Henry James Mann, 1844–1878), American actor Henry P. Mann (1858–1925), American politician from Maryland

See also Henry Manne (1928–2015), American writer and academic Henry Man (disambiguation)