A submarine sandwich (or just submarine where context would exclude the sea vessel, or even just sub) is any of various sandwiches made on a long roll split lengthwise, especially those including meat, cheese, lettuce, tomato, and various condiments. Because the meat is not fried, submarine sandwiches are generally considered to be healthier than hamburgers or hot dogs.
In regions of the United States there are many different terms for local variations on the idea:
- hoagie -- Eastern US
- grinder -- Boston, Massachusetts, New Haven, Connecticut
- Hero sandwich
- Poor boy or "po' boy" -- southern US
- Dagwood sandwich (from the comic strip character Dagwood Bumstead)
- Cuban sandwich -- Florida
- bomber, Italian, wedge, torpedo, zep -- New Jersey