WY

Wy or WY may refer to:

Places:
 * Principality of Wy, an Australian micronation
 * West Yorkshire, an English county
 * West Yorkshire Metro transit system
 * Wyoming, US (postal abbreviation)

Other uses:
 * WY Records, a record label
 * Oman Air, the national airline of Oman
 * WebYeshiva, a website for religious study
 * Wisin & Yandel, a Puerto Rican reggaeton duo
 * Weyerhaeuser (NYSE symbol WY), real estate investment trust company