Ys is a mythical sunken city in Brittany, France.

YS or ys might additionally refer to:

Arts and entertainment

Gaming

Music

Other media

Businesses and organizations

People

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