ORP may refer to:
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Operational Ration Pack
A field ration is a type of prepackaged Military rations, military ration designed to be easily and quickly prepared and consumed in the Battlefield, field, in combat, at the front line, or where eating facilities are otherwise unavailable. Fiel ...
, UK military
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Operational Readiness Plan
An operational definition specifies concrete, replicable procedures designed to represent a construct. In the words of American psychologist S.S. Stevens (1935), "An operation is the performance which we execute in order to make known a concept." F ...
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Operational Readiness Platform
Quick Reaction Alert (QRA) is state of readiness and ''modus operandi'' of air defence maintained at all hours of the day by NATO air forces. The United States usually refers to Quick Reaction Alert as 'Airspace Control Alert'.
Some non-NATO co ...
(ORP)
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Orpington railway station
Orpington railway station is on the South Eastern Main Line, serving the town of Orpington in the London Borough of Bromley, south-east London. It is down the line from Charing Cross railway station, London Charing Cross and is situated between ...
, Bromley, England
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O'Reilly Raceway Park at Indianapolis
Lucas Oil Indianapolis Raceway Park (formerly Indianapolis Raceway Park, O'Reilly Raceway Park at Indianapolis, and Lucas Oil Raceway) is an auto racing facility in Brownsburg, Indiana, about northwest of Downtown Indianapolis, downtown Indianap ...
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Oxidation reduction potential
Redox potential (also known as oxidation / reduction potential, ''ORP'', ''pe'', ''E_'', or E_) is a measure of the tendency of a chemical species to acquire electrons from or lose electrons to an electrode and thereby be reduced or oxidised respe ...
in chemistry
* , a
Polish Navy
The Polish Navy (; often abbreviated to ) is the Navy, naval military branch , branch of the Polish Armed Forces. The Polish Navy consists of 46 ships and about 12,000 commissioned and enlisted personnel. The traditional ship prefix in the Polish ...
ship prefix
{{disambiguation