HY

HY can mean:

*Armenian language (ISO 639 alpha-2)
*IATA code for Uzbekistan Airways
*A shorthand for high, similar to the prefix hi
*An abbreviation for "Helsingin yliopisto", which is Finnish for University of Helsinki
*An abbreviation for Hollywood
*An abbreviation for Henry
*HY (Japanese band), a Japanese band
*Two letter code for Hyatt hotels used by CRS
*High-Yield steel

People

*Patricia Hy-Boulais, a former Hong Kongese/Canadian tennis player