Mk 41
Mk 41 or MK-41 stands for:
- Mk 41 Vertical Launching System , a vertical launch system for missiles
- B41 (nuclear weapon) or Mk 41 , a hydrogen bomb
- Sikorsky S-61 or Sea King Mk 41 , a multipurpose helicopter
- ISO 3166-2: MK , ISO code for Konče , Macedonia
