| Abbreviation | Definition |
|---|---|
| MYN | Multicultural Youth Network |
| MYNA | Muslim Youth of North America |
| MYNT | Muslim Youth Network of Tennessee |
| MYNT | Muslim Youth Network of TN |
| MYO | Mason Youth Organization |
| MYO | McLean Youth Orchestra |
| MYO | Metropolitan Youth Orchestra |
| MYO | Moriches Youth Organization |
| MYO | Muslim Youth of Ottawa |
| MYO | Muslim Youth Organization |
| MYOC | Maine Youth Overweight Collaborative |
| MYOP | Migrant Youth Orientation Program |
| MYR | Missional Youth Retreat |
| MYR | Motivating Youth Recovery |
| MYRA | Minnesota Youth Reading Awards |
| MYRO | Maine Youth Rock Orchestra |
| MYRO | Massachusetts Youth Rugby Organization |
| MYS | Macdonald Youth Services |
| MYS | Marlboro Youth Soccer |
| MYS | McLean Youth Soccer |