LIA may refer to:

  • Lia (name), a list of people with this name
  • Lia, Iran, a village in Qazvin Province, Iran
  • Lia, Malta, a town in Malta
  • Lia, Norway, a village in Sør-Fron municipality, Norway
  • Logan International Airport
  • Luang Prabang International Airport
  • Laser Institute of America, international society for laser applications and safety
  • Libyan Investment Authority
  • Logistics Innovation Agency of the United States Army
  • London Irish Amateur, an English Rugby Union team
  • Long Island Association, a business lobby or coalition founded in the 1920s
  • Love In Action, a Christian ex-gay organization
  • Lia (food), a rice-based dish in Orissa, India
  • Language Independent Arithmetic
  • Little Ice Age, a period of cooling between the 14th and 19th centuries