| Abbreviation | Definition |
|---|---|
| DYLJ | Democratic Youth League of Japan |
| DYMN | Disciples Youth Ministry Network |
| DYMO | Diocesan Youth Ministry Organization |
| DYNA | Dysautonomia Youth Network of America |
| DYO | Dublin Youth Orchestras |
| DYO | Dunedin Youth Orchestra |
| DYP | Director of Youth Protection |
| DYP | Donnycarney Youth Project |
| DYR | Davis Youth Robotics |
| DYR | Diocesan Youth Retreat |
| DYR | Dutch Youth Regatta |
| DYRS | Department of Youth Rehabilitation Services |
| DYRT | Diocesan Youth Retreat Team |
| DYS | Danbury Youth Services |
| DYS | Dearborn Youth Symphony |
| DYS | Dept Of Youth Services |
| DYS | Diabetes Youth Services |
| DYS | Dominion Youth Services |
| DYSL | Delta Youth Soccer League |
| DYSL | Delta Youth Support Link |