MYS could refer to:
- Malaysia; ISO 3166-1 country code MYS.
- Masisa S.A.; New York Stock Exchange symbol MYS.
- Minnesota Youth Symphonies
- Monaco Yacht Show
- Mysore Junction, Karnataka, India; Indian Railways station code MYS.
- Mystic (Amtrak station), Connecticut, United States; Amtrak station code MYS.
- Mystic Records