NTC
- Clevo
- Football South Australia National Training Centre
- Fort Irwin National Training Center
- Luther W. New Jr. Theological College
- NTC Televisión
- National Taitung Junior College
- National Takaful Company (disambiguation)
- National Teachers College
- National Technology Council (Pakistan)
- National Telecommunications Commission
- National Tennis Centre (United Kingdom)
- National Tennis Centre (disambiguation)
- National Textile Corporation
- National Tracing Center
- National Trade Center
- National Trade Certificate Foundation
- National Transitional Council
- National Transitional Council (Congo)
- National Transport Commission
- National Transport Corporation
- Nazarene Theological College (England)
- Nepal Telecom
- New Teacher Center
- Northcentral Technical College
- Northfleet Technology College
- Nourseothricin
- Nuclear Terrorism Convention
- The Nautical Training Corps
- White House National Trade Council