SY
SY is the abbreviation for:
- Guyana according to the ICAO code
- Sailing yacht (only as part of the name)
- (also Sy ) Soziale Systeme (1984) , work by Niklas Luhmann
- Syria as the country code according to ISO 3166
- the postcode area Shrewsbury (as the first letter of a UK postcode )
SY as a distinguishing mark on the license plate:
- Germany: District of Diepholz (for Syke )
- Great Britain: Inverness
- Norway: Bergen in the province of Hordaland
- Poland: city of Bytom
- Czech Republic: Okres Svitavy , German: Zwittau (expiring)
Sy denotes:
Sy is the family name of the following people:
- Abou Sy (* 1991), Mauritanian football player
- Baba Sy (1935–1978), Senegalese checkers player
- Brigitte Sy (* 1956), French actress, director and screenwriter
- Chan Sy (1932–1984), Cambodian politician
- El Hadji Sy (* 1954), Senegalese painter
- Frédéric Sy (* 1861), French astronomer
- Henry Sy (1924–2019), Filipino entrepreneur
- Issa Sy (* 1984), Senegalese football referee
- Stephanie Sy (* 1977), American television journalist
- Sy Khim Piao (* around 1930), Filipino badminton player
- Malik Sy (1855–1922), Muslim scholar and marabout
- Omar Sy (* 1978), French actor and comedian
- Oumou Sy (* 1952), Senegalese fashion designer
sy is:
- the top level domain of Syria, see .sy