National can refer to:

• From Nation or Country
  • Nationality
  • a citizen or subject of a country; by inference, frequently a person who owes loyalty to a country but lacks full membership in it, a non-citizen resident: "citizens of Guam are nationals but not citizens of the United States"--D.L. Oliver. (See Nationality.)
  • National (distribution): A type of product or publication this is distributed across an entire nation, e.g., a national magazine.
• Vending machines made by the large manufacturer Crane Co.
• National (brand), the Japanese brand under which Matsushita products are sold. In the US, they are sold under the Panasonic brand.
• National (Gymanfa Ganu) can refer to a Gymanfa Ganu in North America

any of many entities whose names start with "National"

• National Airlines
• National Center for Research on Earthquake Engineering (NCREE)
• National Broadcasting Company (NBC), a television network
• National Development Front Kerala, a Muslim organisation in Kerala
• National Benzol, a British petroleum brand
• National Bus Company in Australia
• National Car Rental
• National College of Natural Medicine, a medical school in Portland, Oregon.
• National Motor Vehicle Company U.S. automobile company 1900 - 1924
• National Party - The name of several unrelated political parties around the world
• National Semiconductor, an American semiconductor manufacturer.
• National String Instrument Corporation, a company formed in the 1920s to manufacture the first resonator guitars.
• National Reso-Phonic Guitars, a company formed in the 1980s to manufacture resonator guitars and the current owners of the National brand in the USA.
• National Records, a record label

• The Canadian Open Mathematics Challenge
  cms.math.ca
  Qualifying round for the Canadian Mathematical Olympiad. Registration and past problems.
• UIUC Math Contests Webpage
  math.uiuc.edu
  Information and resources for the Putnam and the UIUC Undergraduate Math Contest. Includes practice problems and solutions. Maintained by Professor A.J. Hildebrand.
• UCT Mathematics Competition
  mth.uct.ac.za
  Rules, results, and training materials for the annual competition at the University of Cape Town.