OSA

Acronym	Definition
OSA	Optical Society of America
OSA	Obstructive Sleep Apnea
OSA	Office of Student Affairs
OSA	Office of the State Auditor
OSA	Office of Special Affairs (Church of Scientology International)
OSA	Office of Substance Abuse
OSA	Optical Spectrum Analyzer
OSA	Open Service Access (3GPP)
OSA	Open Systems Architecture
OSA	Official Secrets Act
OSA	Open Service Architecture
OSA	Organizzazione degli Stati Americani
OSA	operational support airlift (US DoD)
OSA	Outstanding Service Award
OSA	Open Software Associates
OSA	Ordo Sancti Augustini (St Augustine Order)
OSA	Order of Saint Augustine
OSA	Overseas Subscribers Agents (lottery agent)
OSA	Office of the Secretary of the Army
OSA	Overseas Students' Association (University of Adelaide, Australia)
OSA	Operational Support Aircraft
OSA	Organization of Staff Analysts (New York, NY)
OSA	Optimal Shelf Availability
OSA	Organización Sionista Argentina
OSA	Optical Subassemblies (Palomar Technologies)
OSA	Opportunistic Spectrum Access
OSA	Om Svar Anhålles
OSA	Oberstabsarzt (German military)
OSA	Oscilloquartz SA (Switzerland)
OSA	Organizations and Strategies in Astronomy
OSA	Object Services Architecture
OSA	Otto Schulze Autometer
OSA	Open Solutions Architecture (Novell)
OSA	Orchid Society of Arizona (Phoenix, AZ)
OSA	Ordinis Sancti Augustini (of the order of St Augustine)
OSA	Old Stone Age (gaming forums)
OSA	Online Sexual Activity
OSA	Order of St Anne
OSA	Open Space Assessment
OSA	Open Security Architecture (Nortel)
OSA	Our Special Ale (Anchor Christmas Ale)
OSA	Office Solution Accelerator (Microsoft)
OSA	Oregon Society of Anesthesiologists
OSA	Opus Sanctorum Angelorum (Latin: Work of the Holy Angels; religious order)
OSA	Ocala Sportsman's Association, Inc (Florida, USA)
OSA	Old Stock Ale (North Coast Brewery)
OSA	Office of Space Acquisition
OSA	Office of the Space Architect
OSA	Operational Support Authority
OSA	Olympic Science Alliance
OSA	Officially Step Aside
OSA	Outfitting Supply Activity
OSA	Office of Safety Appraisals
OSA	Orbiter-based Station Avionics
OSA	Out of Station Allowance
OSA	Outfitting Support Activity
OSA	Hermits of St. Augustine, Augustinians (religious order)
OSA	Objective Switching Architecture
OSA	Operational Safety Analysis/Assessment
OSA	Operating System Account
OSA	Optic Stabilizer Assembly
OSA	OPLAN Supportability Analysis
OSA	Ontology Server for Archaeological Information Retrieval and Processing
OSA	observability subspace algorithm
OSA	On-Screen Analysis
OSA	Organización de Seguros Africanos (Spanish: African Insurance Organization)
OSA	Online Selling Association (Hutchinson, KS)