MOS Food Services, Inc., doing business as MOS Burger, is a multinational fast-food restaurant chain from Japan. Its headquarters are in the ThinkPark Tower in Ōsaki, Shinagawa, Tokyo. At one time its headquarters were located in Shinjuku, Tokyo. It is the second-largest fast-food franchise in Japan after McDonald's, and owns numerous overseas outlets over East Asia, Southeast Asia and Oceania, including China, Taiwan, Hong Kong, South Korea, Singapore, Thailand, Indonesia, the Philippines and Australia. It is also the name of the standard hamburger offered by the restaurant, being its first product when it opened in 1972. As of February 2014 the publicly traded company runs 1,730 MOS Burger and several AEN, Chef's V and Green Grill stores. One slogan used within its stores is "Japanese Fine Burger and Coffee". Wikipedia