Barnacle
Barnacle is
- the English name for barnacles (Cirripedia)
- Barnacle Goose , the English name for the barnacle goose (Branta leucopsis)
- an alien species from Half-Life
- a character from the X-Men universe
Barnacle is a family name for the following people:
- Nora Barnacle , wife of the writer James Joyce
- Pete Barnacle , drummer in various bands
