OTP
- Henri Coandă International Airport
- Interstate 285 (Georgia)
- OTP Bank
- OTP Ingatlanpont
- Office of Technology Policy
- Office of Telecommunications Policy
- Office of Transport and Traffic Policy and Planning
- Office of the President (disambiguation)
- Old Town Pizza
- On-time performance
- One-time pad
- One-time password
- One-time programmable
- Open Telecom Platform
- Opposite Track Path
- Oulun Työväen Palloilijat
- Shipping (fandom)