Reg
- .reg
- C-type lectin
- Certified Public Accountant
- Made in Abyss
- Monarch
- REG BBC
- Raising for Effective Giving
- Random event generator (parapsychology)
- Raptor Education Group
- Reg (film)
- Reg District (Helmand)
- Reg District (Kandahar)
- Reg, Gilan
- Reg, Iran
- Regal Entertainment Group
- Regent railway station
- Reggie (disambiguation)
- Reggio Calabria Airport
- Reginald (disambiguation)
- Regular (disambiguation)
- Rubbadubbers
- Rwanda Energy Group