NAB
- McNab (disambiguation)
- N.A.B. SC
- NAB Show
- Nab Tower
- National Accountability Bureau
- National Archives of Bangladesh
- National Assessment Bank
- National Association of Broadcasters
- National Australia Bank
- Needle aspiration biopsy
- Neodymium aluminium borate
- Nerf Arena Blast
- New American Bible
- Nickel-aluminum bronze
- North American Bancard
- North Australian Basin
- Nov, Golan Heights
- The Nab