Businesses starting with N
- National Institute Of Private Investigation
- National Institute of Science Communication
- National Institute of Science, Technology & Development Studies
- National Institute of Skilled Training
- National Instruments India
- National Insurance
- National Insurance
- National Iron & Steel Company (1984) Limited
- National Jute Manufacturers Corporation Ltd.
- National Knitwears
- National League of Pen Pals
- National Library
- National Machine Tools Corporation
- National Medical Forum
- National Medical Manufacturing
- National Metal Industries
- National Metal Industries, Mumbai
- National Open School
- National Organic Chemical Industries Ltd
- National Oversaes