DY, D. Y., Dy, or dy may refer to:

In science and technology, and mathematicsEdit

AstronomyEdit

  • DY Persei, a variable star in the Perseus constellation
  • DY Persei variable, a subclass of R Coronae Borealis variables
  • DY Eridani, a triple star system less than 16.5 light years away from Earth

Other sciencesEdit

BusinessesEdit

PeopleEdit

PlacesEdit

Other usesEdit

See alsoEdit