Nautilus is the name of several submarines, submersibles, and semisubs. They are named for the nautilus.
Military subs
- , a French First Republic sub designed by Fulton, considered the first practical sub (1800âÂÂ1802)
- , a French Navy sub, a (1927âÂÂ1947)
- , a UK Royal Navy sub, the largest RN sub at service entry (1914âÂÂ1922)
- , a U.S. Navy sub, a (1930âÂÂ1945)
- , a prototype U.S. Navy sub, the first nuclear submarine (1954âÂÂ1980)
Civilian subs
- , a former U.S. Navy submarine, a O-class submarine (1917âÂÂ1931)
- , a Danish civilian home-built sub, part of a 2017 murder case (2009âÂÂ2018)
Fictional subs
See also