Wilhelm Schmidt may refer to:
- Wilhelm Schmidt (engineer) (1858–1924), German engineer and inventor, nicknamed Hot Steam Schmidt due to his work with superheated steam
- Wilhelm Schmidt (historian) (1817–1901), Austrian-Moravian historian who has written on Romanian culture
- Wilhelm Schmidt (linguist) (1868–1954), Austrian linguist and anthropologist
- Wilhelm Adolf Schmidt (1812–1887), German historian
- Wilhelm Matthäus Schmidt (1883–1936), Austrian climatologist