GYS may refer to:
People edit
- Gys van Beek (1919–2015), Dutch resistance member during World War II
- Leda Gys (1892–1957), Italian film actress
- Robert Gys (1901–1977), French art director
Other uses edit
- Glycogen synthase
- Great Yorkshire Show
- Guangyuan Panlong Airport, Sichuan, China
- Operation GYS, an Israeli operation conducted during the 1948 Arab–Israeli War