Computing
* Network address translation (NAT), in computer networkingChemistry, biology, and medicine
* Natural antisense transcript, an RNA transcript in a cell * N-acetyltransferase, an enzyme; also NAT1, NAT2, etc. * Nucleic acid test, for genetic material * Neonatal alloimmune thrombocytopenia, a disease * Noradrenaline transporter (NAT), also called norepinephrine transporter (NET) * Nucleobase ascorbate transporter (NAT) family, or Nucleobase cation symporter-2 (NCS2) family * Sodium ammonium tartrate tetrahydrate, the material crystallized by Pasteur as enantiomersOrganizations
* National Actors Theatre, New York City, U.S. * National AIDS trust, a British charity * National Archives of Thailand * National Assembly of Thailand, the national parliamentPeople
* Nat (name), a given name or nickname, usually masculine, and also a surname * Nat (Muslim), a Muslim community in North India * Nat caste, a Hindu caste found in northern India and NepalPlaces
* Nat, Punjab, India, a village * Nat, West Virginia, United States, an unincorporated community * Greater Natal International Airport, São Gonçalo do Amarante, Brazil (IATA code NAT) ** Augusto Severo International Airport (closed), former IATA code NATOther uses
* Nat (deity), deities worshipped in Myanmar and neighboring countries * Nat (unit), a logarithmic unit of information or entropy * Bestune NAT, a Chinese electric minivan * Nottingham Asphalt Tester * National Achievement Test, in the Philippines * North Atlantic Tracks, a set of flight routes * Nat (Wild Cards), Nat (''Wild Cards''), the nature of some characters in the ''Wild Card'' novels * Nat Smurfling, a fictional character from ''The Smurfs'' * ''NAT: An Orchestral Portrait of Nat "King" Cole'', a 1966 album by Nelson Riddle * North Atlantic Treaty, the treaty that implemented NATOSee also
* Gnat (disambiguation) * NATS (disambiguation) * Nath (disambiguation) * National (disambiguation) * Nata (disambiguation) * Nati (disambiguation) {{disambiguation, geo