ORS or Ors may refer to:

Airports

  • Orcas Island Airport (FAA airport code ORS), San Juan County, Washington, United States
  • Orpheus Island Resort Waterport (IATA airport code ORS), Queensland, Australia

Medicine

  • Oculo-respiratory syndrome, a usually transient condition following influenza immunization
  • Olfactory reference syndrome, a mental disorder concerning body odor
  • Oral rehydration solution, a type of fluid replacement used to prevent or treat dehydration
  • Ovarian remnant syndrome, a condition caused by residual ovarian tissue after an oophorectomy

Organizations

  • Operational Research Society
  • Orthopaedic Research Society, a professional, scientific and medical organization
  • Otorhinolaryngological Research Society, British medical association

Places

  • Ors, a commune in Nord, France
  • Ors, Vivaro-Alpine for Oulx, a comune of Turin, Piedmont, Italy

People

  • Paquita Ors (1928–2025), Spanish pharmacist and cosmetic businesswoman

Satellites and rockets

  • ORS-1 or USA-231, an American reconnaissance satellite launched in 2011
  • ORS-4, the first launch of the rocket SPARK (rocket)
  • ORS-5, a satellite launched in 2017

Other uses

  • Michigan Office of Retirement Services, United States
  • ISO 639:ors or Orang Seletar language, native to Malaysia and Singapore
  • Octopole reaction system, a type of Collision/reaction cell
  • OID Resolution System, a system for mapping globally unique object identifiers into DNS name zone files; see ISO/IEC JTC 1/SC 6
  • Old Red Sandstone, an assemblage of rocks in the North Atlantic region
  • Operational Research Section, part of the British Royal Air Force in the Second World War
  • Operationally Responsive Space Office, a joint initiative of several agencies within the United States Department of Defense
  • Oregon Revised Statutes, the codified body of statutory law governing Oregon, United States
  • Orlando Riva Sound (O.R.S.), former German Euro disco group
  • Overseas Research Scholarship, an award for foreign country nationals to undertake research in the United Kingdom
  • Oxygen reduction system, an active fire protection technique
  • On-Rails Shooter, a type of shooter video game.
  • Ors, short for Others; see List of legal abbreviations