Ys is a mythical sunken city in Brittany, France. YS or ys may also refer to: Arts and entertainment Games and anime Ys (series), a video game series Ys I: Ancient Ys Vanished, or simply Ys, the first game in the series Ys (anime), anime OVA series based on the first two Ys video games Other Ys media Music Ys (Joanna Newsom album), 2006 Ys, a 1972 album by Neapolitan progressive rock band Il Balletto di Bronzo "Ys", a 1972 song by Alan Stivell from Renaissance of the Celtic Harp "Yellow Submarine", a 1966 song by the Beatles with the initials "Y.S." Other media Your Sinclair, a British computer magazine Businesses and organizations Confederation of Vocational Unions, abbreviated YS in Norwegian Esat Young Scientist and Technology Exhibition, an Irish annual school students' science competition Proteus Airlines (IATA airline code YS) Régional (IATA airline code YS) Youngstown and Southeastern Railroad (reporting mark YS) People Etienne Ys (born 1962), Netherlands Antilles politician Kim Young-sam, 14th president of Republic of Korea Places Ys, a mythical sunken city in Brittany, France. Y.S. River, in the island of Jamaica Science Yoctosecond, or ys, a unit of time equal to 10−24 seconds Yottasecond, or Ys, a unit of time equal to 1024 seconds