Ray may refer to:

* A ray, or half-line in geometry or physics.
* Any fish in the order Batoidea, especially true rays of the family Rajiformes (but not including skates).
* Ray (optics), an idealized narrow beam of light.
* An "electrical ray", an old name for a laser beam.
* Radiation
* Ray (R&B), an R&B trio.
* Ray (film), a 2004 movie biography of Ray Charles.
* The city...(continue reading)