Acronyms
- Independent Socialist Party (Netherlands) (Dutch:Onafhankelijke Socialistische Partij)
- obiit sine prole, Latin phrase meaning "died without offspring"
- Oblate Sisters of Providence
- Off-street parking
- Office of Special Plans
- Online service provider
- Open Settlement Protocol
- Open Source Physics
- Open space preserve
- Open Specification Promise, a legal statement concerning unrestricted use of Microsoft intellectual property
- Operating System Projects, an environment for OS projects
- Oral sodium phosphates, a drug product used for colon cleansing prior to a colonoscopy
- Orange Smoothie Productions, game modification team
- Orbital Space Plane
- Orchestra of St Paul's
- Oregon Star Party
- Oregon State Police
- Organic Solderability Preservative
- Organic surface protection, a coating on printed circuit boards
- Ornithological Society of Polynesia
- Outer Silver Pit, a deep place in the southern part of the North Sea
- Outside plant
- Outsourced solution provider
- Ovince St. Preux, a mixed martial artist
Read more about this topic: OSP
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