Subway is the trade name of a multinational franchising company selling sandwiches and salads. The corporate parent of Subway is Doctor's Associates, based in Connecticut.
The company takes its name from the submarine sandwich, so named for its shape, which was shorted to sub. The chain punningly uses the New York Subway, an underground system as its decorative motif, and has a sandwich named the BMT for one of New York's subway lines.