OP

Template:Sister project OP or Op may refer to:

Arts and entertainment

• One Piece, a 1997 Japanese manga and anime
• OP, an abbreviated term for opening theme songs in anime
• Opposite prompt, a stage right prompt corner on a theatre stage
• Optimus Prime, a character from the Transformers franchise
• Op., short for opus number, used to denote one work of musical composition from many
• Original pronunciation, the phonology of Early Modern English, as used in William Shakespeare's time, specifically when used to perform his works in modern times.
• Out of print, a status of a book title at a publishing house

Businesses and organizations

• Operational planning, the process of planning short term measures in a company
• OP Financial Group, a Finnish company
• Oborový podnik ("specialized business"), a bygone Czechoslovak state designation for a business entity
• Ocean Pacific, a retail clothing company
• Oratory Preparatory School, in New Jersey, United States
• Dominican Order (Template:Langx), a Catholic religious order
• Odisha Police, police patrol in Odisha, India
• Publications Office of the European Union (Template:Langx), interinstitutional body of the European Union
• Open Philanthropy, research and grant making foundation

Internet

• Original post (or poster), the opening entry (or author thereof) in a thread or discussion in an internet forum
• Overpowered (game balance), in video games, when a particular aspect or character is lacking game balance

Mathematics and computers

• Op (statistics), a symbol used in probability mathematics
• Octagonal prism
• Over-provisioning, a phenomenon associated with solid state storage; see Template:Slink

Places

• Orchard Park, New York
• Overland Park, Kansas
• O'Brien Peak
• O'Cain Point
• O'Connor Peak
• O'Donnell Peak
• O'Fallon Park
• O'Higgins Park
• O'Leary Peak
• O'Neal Point
• O'Neill Peak
• O'Neill Point
• O'Neill Regional Park
• O'Shea Peak
• O'Sullivan Peak

Other uses

• Observation post, a position from which soldiers can watch enemy movements
• Old Pauline, the term for a former pupil of St Paul's School, London
• Old Peterite, the term for a former pupil of St Peter's School, York
• Orange Pekoe, a grade of black tea
• Organophosphate, the general name for esters of phosphoric acid
• Overall Position, the grade appointed to Queensland high-school graduates
• O.P. Anderson, a Swedish spirit of the aquavit type
• Opportunity point, a tennis term for an opportunity to potentially break serve when the score is 15–30

See also

• Op-amp, short for operational amplifier
• Op-ed, a newspaper opinion piece
• Operation (disambiguation)
• Operator (disambiguation)
• OPS (disambiguation)
• Ops (disambiguation)
• Op. cit., opere citato, or "in the work cited"
• 0P (disambiguation) (zero p)
• All pages with titles beginning with OP