Office of Protective ServicesOffice of Public SafetyPresidential Communications Operations Office (Philippines), known as Office of the Press SecretaryOptical Position Sensor, an electronic deviceOrchestre philharmonique de StrasbourgOttawa Police ServiceOulun Palloseura, a Finnish football clubOceanic Preservation Society
Other uses
Off Premise Station, also known as Off Premise Extension, a type of telephone extension2-Nonenal, known as "old person smell"On-base plus slugging, a baseball statisticOne-piece swimsuitOperationsOps, the third strain of Stigma from Trauma Center: New BloodOps, the Roman goddess of plentyOriented polystyreneOrthogonal Polarization Spectral imagingOracle Parallel Server, a computer cluster databaseOpen Publication Structure, a specification for e-books in EPUB format
