NA, N.A., Na, or n/a may refer to:
The National Register of Historic Places (NRHP) is the United States federal government's official list of districts, sites, buildings, structures, and objects deemed worthy of preservation.
Napoleon Bonaparte (/nəˈpoʊliən ˈboʊnəpɑːrt/; French: [napɔleɔ̃ bɔnapaʁt]; 15 August 1769 – 5 May 1821) was a French military and political leader who rose to prominence during the French Revolution and led several successful campaigns during the French Revolutionary Wars.
The National Aeronautics and Space Administration (NASA /ˈnæsə/) is an independent agency of the executive branch of the United States federal government responsible for the civilian space program, as well as aeronautics and aerospace research.
The National Football League (NFL) is a professional American football league consisting of 32 teams, divided equally between the National Football Conference (NFC) and the American Football Conference (AFC).
The International Radiotelephony Spelling Alphabet, commonly known as the ICAO phonetic alphabet, sometimes called the NATO alphabet or spelling alphabet and the ITU radiotelephonic or phonetic alphabet, is the most widely used radiotelephonic spelling alphabet.
In the United States, Native Americans (also known as American Indians, Amerindians, Indigenous Americans or simply Indians; see §Terminology differences) are people descended from the pre-Columbian indigenous population of the land within the country's modern boundaries.