| Acronym | Definition |
|---|
| KYS | Keys (postal suffix) |
| KYS | Kuopion Yliopistollinen Sairaala (Finnish: Kuopio University Hospital) |
| KYS | Kill Your Self (record label) |
| KYS | Keep Yourself Safe |
| KYS | Kiss Your Sister |
| KYS | Know Your Status (health status) |
| KYS | Know Your Stuff (home inventory software) |
| KYS | Key Size |
| KYS | Keep Your Secrets |
| KYS | Kiss Yourself |
| KYS | Know Your Students |
| KYS | Kyoei Electronics Singapore Pte. Ltd. |
| KYS | Kolej Yayasan Saad (Saad Foundation College; Malacca, Malaysia) |
| KYS | Kentuckiana Yacht Sales, Inc. (Jeffersonville, Indiana) |
| KYS | Kent Youth Singers (UK) |
| KYS | Kill Your Stereo (music forum) |
| KYS | Knit Your Sweater |
| KYS | Knoxville Youth Sports (Tennessee) |