NCL
- Lynx Express (parcels)
- NCAR Command Language
- NCLS (disambiguation)
- NULL convention logic
- National Central Library
- National Central Library (disambiguation)
- National Chemical Laboratory
- National City Lines
- National Conference League
- National Consumers League
- National Cricket League
- Native chemical ligation
- Nested Context Language
- Neuronal ceroid lipofuscinosis
- New Caledonia
- Newcastle International Airport
- Newcastle University
- Newcastle railway station
- Nintendo Company Limited
- North Coast League
- North Coast railway line, New South Wales
- North Coast railway line, Queensland
- Northern City Line
- Northern Coalfields
- Norwegian Cruise Line
- Nucleolin