FY

Fy or FY may refer to:

Aerospace

 * Convair XFY Pogo, an experimental aircraft
 * Fengyun, a series of Chinese weather satellites
 * Firefly (airline), Malaysia (IATA code: )

Places

 * FY postcode area, England
 * North Macedonia (NATO country code: )
 * Fengyang, China

Science

 * Yield strength, of a material
 * Feynmanium, or untriseptium

Other uses

 * Fushigi Yûgi, a manga (1991–1996)
 * Fiscal year, in business
 * West Frisian language, spoken in the Netherlands (ISO 639-1: )