SMY or smy may refer to:
People
edit- Jimmy Smy (1907–1997), English football player
Places
edit- SMY, the IATA code of Simenti Airport, Senegal
- St Mary Cray railway station, London, National Rail station code
Other
edit- smy, the ISO 639 code of Semnani language
- SmY RNA, found in some nematode worms