UY

UY or uy' may refer to:

Places:
 * Uruguay (ISO 3166-1 country code UY)
 * Upper Yukon region, Canada
 * Uy (Irtysh), a tributary of the Irtysh in Russia
 * Uy (Tobol), a tributary of the Tobol in Russia

Other uses:
 * Uy (surname)
 * .uy, the country code top level domain (ccTLD) for Uruguay
 * Cameroon Airlines (IATA code UY)
 * University of Yangon, Myanmar
 * University of Yuryev, Estonia (today University of Tartu)
 * Urusei Yatsura, a Japanese manga and anime series
 * UY Scuti and UY Sextantis, stars