MYST
| Acronym | Definition |
|---|---|
| MYST | Mystery Science Theater |
| MYST | Mana Youth Sailing Trust (New Zealand) |
| MYST | Ministry of Youth, Sport and Tourism (Azerbaijan) |
| MYST | McGaw YMCA (Young Men's Christian Association) Swim Team (Evanston, IL) |
| MYST | Meadville YMCA (Young Men's Christian Association) Swim Team (Meadville, PA) |
| MYST | Missoula YMCA (Young Men's Christian Association) Swim Team (Missoula, MT) |