ORS

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

• 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

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

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

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

• 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

• 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

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