OP or Op may refer to:

Arts and entertainment

* ''

One Piece ''One Piece'' (stylized in all caps) is a Japanese manga series written and illustrated by Eiichiro Oda. It has been serialized in Shueisha's ''shōnen'' manga magazine '' Weekly Shōnen Jump'' since July 1997, with its individual cha ...

'', a 1997 Japanese manga and anime * Opposite prompt, a stage right

prompt corner In a theatre, the prompt corner or prompt box is the place where the prompter—usually the stage manager in the US or deputy stage manager in the UK—stands in order to coordinate the performance and to remind performers of their lines when req ...

on a theatre stage *

Optimus Prime Optimus Prime, , is a fictional character in the ''Transformers'' franchise. The Transformers characters were developed for an American market after Hasbro representatives visited the 1983 Tokyo Toy Show. The characters were modified and the ...

, a character from the ''Transformers'' franchise * Op., short for

opus number In musicology, the opus number is the "work number" that is assigned to a musical composition, or to a set of compositions, to indicate the chronological order of the composer's production. Opus numbers are used to distinguish among composit ...

, 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 Operational planning (OP) is the process of planning strategic goals and objectives to technical goals and objectives. It describes milestones, conditions for success and explains how, or what portion of, a strategic plan will be put into operat ...

, the process of planning short term measures in a company *

OP Financial Group OP Financial Group is one of the largest financial companies in Finland. It consists of 180 cooperative banks and their central organization. “OP” stands for “osuuspankki” in Finnish, literally meaning “cooperative bank”. The financi ...

, 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 Oratory Preparatory School, commonly known as Oratory Prep, is a Roman Catholic college preparatory day school for boys in grades 7-12, located in Summit, in Union County, New Jersey, United States, approximately west of Manhattan. The scho ...

, in New Jersey, United States *

Dominican Order The Order of Preachers ( la, Ordo Praedicatorum) abbreviated OP, also known as the Dominicans, is a Catholic mendicant order of Pontifical Right for men founded in Toulouse, France, by the Spanish priest, saint and mystic Dominic of ...

( la, Ordo Praedicatorum, , links=no), a Catholic religious order *

Odisha Police The Odisha Police abbreviated as either OP or OPS, is the law enforcement agency for the state of Odisha in India. It is headquartered in Cuttack, the former capital of Odisha. The Odisha Police is headed by a Director General of Police, curren ...

, police patrol in Odisha, India

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 In geometry, the octagonal prism is the sixth in an infinite set of prisms, formed by rectangular sides and two regular octagon caps. If faces are all regular, it is a semiregular polyhedron. Symmetry Images The octagonal prism can also ...

* Over-provisioning, a phenomenon associated with solid state storage; see

Places

Orchard Park, New York Orchard Park is a town in Erie County, New York. It is an outer ring suburb southeast of Buffalo. As of the 2010 census, the population was 29,054, representing an increase of 5.13% from the 2000 census figure. The town contains a village a ...

Overland Park, Kansas Overland Park ( ) is the second-most populous city in the U.S. state of Kansas. Located in Johnson County, Kansas, it is one of four principal cities in the Kansas City metropolitan area and the most populous suburb of Kansas City, Missouri. As ...

* O'Brien Peak * O'Cain Point * O'Connor Peak * O'Donnell Peak *

O'Fallon Park O'Fallon Park is a municipal park in St. Louis, Missouri, that opened in 1908. Description The park is named after John O'Fallon, a colonel who fought in the War of 1812 and nephew of William Clark. The park is 126.63 acres and was once part of O ...

O'Higgins Park O'Higgins Park (, formerly known as Parque Cousiño), with an area of around , is Santiago, Chile's second largest public park after Metropolitan Park. It is located in the center of the capital, in the Santiago Commune. The park, named after B ...

* O'Leary Peak * O'Neal Point *

O'Neill Peak O'Neill Peak () is the highest point (about 850 m) of FitzGerald Bluffs, on the English Coast, Palmer Land. Following geological work in the area by a United States Geological Survey (USGS) field party in December 1984, named by Advisory Committee ...

* O'Neill Point *

O'Neill Regional Park O'Neil Regional Park is a major regional park and greenway in eastern Orange County, California, United States, located along Trabuco Creek and Live Oak Canyon. The park encompasses of canyon and riparian zone habitat, and includes campgrounds ...

* O'Shea Peak *

O'Sullivan Peak O'Sullivan Peak () is an ice-covered peak, 1,765 m, which forms the highest point and is near the south end of a north–south trending ice-covered ridge, standing 11 nautical miles (20 km) west of the north arm of Odom Inlet, on the east coas ...

Other uses

Observation post An observation post (commonly abbreviated OP), temporary or fixed, is a position from which soldiers can watch enemy movements, to warn of approaching soldiers (such as in trench warfare), or to direct fire. In strict military terminology, an ...

, a position from which soldiers can watch enemy movements * Old Pauline, an ex-pupil of St Paul's School, London * Old Peterite, a former pupil of St Peter's School, York *

Orange Pekoe In the tea industry, tea leaf grading is the process of evaluating products based on the quality and condition of the tea leaves themselves. The highest grades for Western and South Asian teas are referred to as "orange pekoe", and the lowe ...

, a grade of black tea * Organophosphate, the general name for esters of phosphoric acid *

Overall Position The Overall Position (OP) was a tertiary entrance rank used in Queensland, Australia to guide selection into universities. Like similar systems used throughout the rest of Australia, the OP shows how well a student has performed in their senior s ...

, the grade appointed to Queensland high-school graduates *

O.P. Anderson O.P. Anderson Aquavit is a Swedish spirit of the akvavit type, presented in 1891 for the Gothenburg Exhibition Fair under the name "Gammal Fin 1ma Aquavit". The firm producing it was called ''O.P. Anderson & Son i Göteborg'', which has later giv ...