Subway is a fast food restaurant chain that specializes in submarine sandwiches and salads. The company was founded in 1965 by Fred DeLuca and Peter Buck and is headquartered in Milford, Connecticut. Subway has over 44,000 locations in more than 100 countries, making it the largest fast food chain in the world by number of locations. The company is known for its customizable sandwiches and healthy options, such as its Fresh Fit menu. Subway is a privately held company and does not disclose its financial information.