English abbreviations from ntotl to nttf
- NTOTL (Never Too Old To Learn)
- NTOU (National Taiwan Ocean University)
- NTP (Network Time Protocol)
- NTPF (Near Term Pre-Positioned Force)
- NTPN (National Tech Prep Network)
- NTPS (Near-Term Pre-Positioned Ships)
- NTQ (Nuke The Queers)
- NTR (Network Time Reference)
- NTRA (National Thoroughbred Racing Association)
- Ntri. (Nostri ("Of our"))
- NTRN (Non-Tactical Radio Networks)
- NTRP (Navy Tactical Reference Publication)
- NTS (Naval Telecommunications System)
- NTS/2 (Network Transport Services/2)
- NTSA (National Target Shooting Association)
- NTSAD (National Tay-Sachs & Allied Diseases Association)
- NTSB (National Transportation Safety Board)
- NTSC (National Television Standards Committee (colloquially, Never Twice the Same Color))
- NTSS (National Time-Sensitive System)
- NTT ((telescope) New Technology Telescope, a telescope operated by the European Southern Observatory)
- NTTC (National Teacher Training Council)
- NTTF (Nettur Technical Training Foundation)