| Abbreviation | Definition |
|---|---|
| RYE | Rotary Youth Exchange |
| RYF | Ridgefield Youth Football |
| RYFI | Refugee Youth And Family Initiative |
| RYI | Roxbury Youth Initiative |
| RYLA | Roswell Youth Lacrosse Association |
| RYLA | Rotary Youth Leadership Assembly |
| RYM | Reformed Youth Ministries |
| RYMD | Romanian Youth Movement for Democracy |
| RYOT | Resurrection Youth Of Today |
| RYP | Refugee Youth Project |
| RYS | Rappahannock Youth Symphony |
| RYS | Reformed Youth Services |
| RYS | Residential Youth Services |
| RYSF | Revolutionary Youth and Students Federation |
| RYSF | Rochester Youth Sports Foundation |
| RYT | Riverland Youth Theatre |
| RYT | Rutland Youth Theatre |
| RYTL | Rotary Youth Trust for Luton |
| RYY | Rochester Youth Year |
| SACY | Sudbury Action Centre for Youth |