Rp

RP, R-P, Rp, R-p, or rp may refer to:

Arts and entertainment

• Rp, in musical set theory; see similarity relation
• Rating Pending, a designation for a game in the process of being rated by the ESRB
• Rocket Power, a U.S. cartoon

Businesses and organizations

• RallyPoint, a social network for the US military
• Reform Party (Singapore), an opposition party in Singapore led by Kenneth Jeyaretnam
• Republic Polytechnic, a polytechnic in Singapore
• Rheinische Post, a German newspaper
• Rhône-Poulenc, a former French chemical company
• Royal Society of Portrait Painters (London), with membership indicated RP
• Welfare Party, or Refah Partisi, in Turkey
• Chautauqua Airlines (IATA airline designator RP)

Economics and finance

• Repurchase agreement, the sale of securities together with an agreement for the seller to buy back the securities at a later date
• Reservation price, the highest price a buyer is willing to pay for goods or a service
• Rupee, common name for the currencies of several countries
• Rupiah, the official currency of Indonesia

Language

• Received Pronunciation, a standard accent of Standard English in the United Kingdom
• Rioplatense Spanish, a dialect spoken in parts of Argentina and Uruguay

Places

• Republic of the Philippines (former two-letter country code)
• Republic of Poland (Rzeczpospolita Polska)
• Rhineland-Palatinate, one of sixteen German states
• Région Parisienne or Île-de-France, the area surrounding Paris, France

Religion

• Reformed Presbyterian Church (disambiguation)
• Regulative principle of worship, a Calvinist and Anabaptist principle
• Religious Programs Specialist
• Retribution principle (RP)

Science, technology, and mathematics

Biology and medicine

• Radical prostatectomy
• Retinitis pigmentosa
• Raynaud's phenomenon
• Medical prescription from Latin, also Rp/.

Mathematics

• RP (complexity), randomized polynomial time, a class in computational complexity theory
• Real projective line
• Real projective plane
• Real projective space

Other uses in science and technology

• Rapid prototyping, a manufacturing and engineering process
• Rear projection effect, a film technique
• Red phosphorus, an allotrope of the element
• Reflections Projections, a technology conference of the Association for Computing Machinery
• Reversed-phase chromatography, a laboratory technique
• RP-3, a British rocket projectile in World War II
• Rendezvous Point, in the Protocol Independent Multicast family of IP routing protocols
• Rocket Propellant; see RP-1
• RP, a small rock climbing nut, named after Roland Pauligk

Other uses

• Relief pitcher, a baseball term
• Registered Paralegal, a certification program of the National Federation of Paralegal Associations
• Regimental Police or Regimental Provost, soldiers responsible for regimental discipline and unit custody in the British Army
• Reporting Person or Party, in U.S. law enforcement jargon
• Role play