CYS

CYS or Cys may refer to:

Cysteine, an amino acid abbreviated Cys
Cheyenne Regional Airport, Wyoming, United States, IATA and FAA LID airport code
Cathays railway station, Cardiff, Wales, station code
California Youth Symphony, a San Francisco Bay Area symphony orchestra for young musicians
Cyprus Organization for Standardization, the Cyprus national standardization body
Cys Kurland, footballer who played for the South African national side in 1947

See also