MSG (disambiguation)
- BITNET Relay
- Bloodhound Gang
- Gurmeet Ram Rahim Singh
- HK MSG-90
- List of Indian film series
- M-SG reducing agent
- M. S. Gopalakrishnan
- M.S.G. (McAuley Schenker Group album)
- MSG
- MSG (Michael Schenker Group album)
- MSG Network
- MSG Sportsnet
- MSG-2 The Messenger
- Madison Square Garden
- Madison Square Garden (1879)
- Madison Square Garden (1890)
- Madison Square Garden (1925)
- Madison Square Garden Entertainment
- Madison Square Garden Sports
- Maine State Guard
- Manchester Sports Guild
- Marine Security Guard
- Maseng railway station
- Maserati MSG Racing
- Master sergeant
- McAuley Schenker Group
- Melanesian Spearhead Group
- Meteosat Second Generation
- Michael Schenker Group
- Microgravity Science Glovebox
- Minnesota State Guard
- Mississippi State Guard
- Missouri State Guard
- Mobile Suit Gundam
- MsgPlus!
- Muettersproch-Gsellschaft
- Notorious MSG
- The Message (Bible)
- Windows Messenger service