The acronym "INS" can refer to:

  • Immigration and Naturalization Service (former United States agency, now part of several agencies in the U.S. Department of Homeland Security)
  • Indian Naval Ship, formerly Her Majesty's Indian Ship (HMIS) prior to 1950.
  • Israeli Naval Ship
  • Inelastic neutron scattering
  • Inertial navigation system
  • The insulin gene
  • I Not Stupid; a Singaporean movie released in 2002
  • Insert Key of a computer keyboard
  • International Necronautical Society
  • International News Service
  • International Numbering System adopted by the Codex Alimentarius Commission
  • Irish Naval Service
  • Indian Newspaper Society (formerly Indian and Eastern Newspaper Society)
  • Independent National Socialism, a derivative of Nazism
  • Indian numbering system
  • Israeli new shekel, the currency unit of Israel.