Lon or LON may refer to:

  • Launch on Need, a Space Shuttle rescue mission which would have been mounted to rescue the crew of a Space Shuttle if needed
  • League of Nations, the first permanent international organization for maintaining world peace, predecessor of the United Nations
  • Legends of Norrath, an online trading-card game by Sony Online Entertainment
  • Local oxidation nanolithography, a nanofabrication technique
  • LonTalk, protocol for electronic automation networks
  • LonWorks, a control network protocol
  • LON, the IATA airport code covering all airports within the London area of the United Kingdom, see London Airport (disambiguation)

Read more about Lon:  People