Sigmund or Siegmund may refer to:
People
- Sigmund (given name), list of people with the name Sigmund
Arts and entertainment
- Sigmund and the Sea Monsters, American 1970s TV series
;Fictional characters
- Sigmund (also Siegmund), a hero in Norse mythology
- Siegmund, a focal character in Richard Wagner's Die Walküre
- Sigmund (comics), Doctor Sigmund, a Dutch comics character
Others
- , a cargo ship in service 1926-29
See also
- Sigismund (disambiguation)
- Zygmunt, a given name