| Acronym | Definition |
|---|
| CYS➣Cysteine |
| CYS➣Child and Youth Services |
| CYS➣Configure Your Server |
| CYS➣Club Young Scientists (Bulgaria) |
| CYS➣Childhood and Youth Studies |
| CYS➣Colorado Youth Soccer (Greenwood Village, CO) |
| CYS➣California Youth Symphony |
| CYS➣Count Your Sheep (webcomic) |
| CYS➣Cyprus Organization for Standards and Control of Quality |
| CYS➣Check Your Settings |
| CYS➣Cheyenne, WY, USA - Cheyenne Municipal Airport (Airport Code) |
| CYS➣Communist Youth of Siam (Thailand) |