OSP

OSP or Osp may refer to:

Places

 * Osp, a valley and a village in Slovenia

Biology

 * Outer surface proteins (Osp), expressed in the outer membrane of some gram-negative bacteria, particularly Borrelia burgdorferi

Organizations

 * Oblate Sisters of Providence, a Roman Catholic women's religious institute
 * Office of Special Plans, a U.S. intelligence unit (2002–2003)
 * Onafhankelijke Socialistische Partij (Independent Socialist Party), a revolutionary socialist political party in the Netherlands
 * Orchestra of St Paul's, a professional chamber orchestra resident at the Actors' Church, London
 * Oregon Star Party, an annual event in the United States for observational astronomy
 * Oregon State Police, an American law enforcement agency

Technology

 * Online service provider, a supplier of internet content
 * Open Settlement Protocol, a standard for ISPs to exchange information on IP telephony
 * Open Source Physics, a project to encourage open source code libraries for numerical simulation
 * Open Specification Promise, a legal statement concerning use of Microsoft intellectual property
 * Open Syllabus Project, an open-source syllabus database
 * OpenShot, a free and open-source video editor for Windows, macOS, Linux, and ChromeOS
 * Operating System Projects, an environment for teaching about computer systems
 * Orbital Space Plane, a NASA concept to support the International Space Station
 * Organic solderability preservative, a method for coating printed circuit boards
 * Outside plant, the telecommunications or electrical cabling between supplier and customer

Other

 * Ovince St. Preux, an American martial artist known as OSP