MSR may refer to:

Science and technology

* Macrophage scavenger receptor, a receptor found in macrophages *

Magnetic stripe reader The term digital card can refer to a physical item, such as a memory card on a camera, or, increasingly since 2017, to the digital content hosted as a virtual card or cloud card, as a digital virtual representation of a physical card. They share ...

, a device used to read magnetic stripe cards such as credit cards *

M–sigma relation The M–sigma (or ''M''–''σ'') relation is an empirical correlation between the stellar velocity dispersion ''σ'' of a galaxy bulge and the mass M of the supermassive black hole at its center. The ''M''–''σ'' relation was first presented ...

, in astrophysics *

Mars sample return A Mars sample-return (MSR) mission is a proposed mission to collect rock and dust samples on Mars and return them to Earth. Such a mission would allow more extensive analysis than that allowed by onboard sensors. The three most recent concept ...

mission, a spaceflight mission to return rock and dust samples collected on Mars *

Mirror self-recognition The mirror test—sometimes called the mark test, mirror self-recognition (MSR) test, red spot technique, or rouge test—is a behavioral technique developed in 1970 by American psychologist Gordon Gallup Jr. as an attempt to determine whether an ...

, in animals through the mirror test *

Molten salt reactor A molten salt reactor (MSR) is a class of nuclear fission reactor in which the primary nuclear reactor coolant and/or the fuel is a molten salt mixture. Only two MSRs have ever operated, both research reactors in the United States. The 1950's Ai ...

, an advanced nuclear reactor design

Computing

Machine state register A machine state register (MSR) is one of three process control registers present in the PowerPC processor architecture. Processors The implementation details of the machine state register will vary from model to model. Below are two representati ...

, a register used in PowerPC architectures *

Model-specific register A model-specific register (MSR) is any of various control registers in the x86 instruction set used for debugging, program execution tracing, computer performance monitoring, and toggling certain CPU features. History With the introduction of th ...

, a feature in x86 processors *

Microsoft Reserved Partition A Microsoft Reserved Partition (MSR) is a partition of a data storage device, which is created to reserve a portion of disk space for possible subsequent use by a Windows operating system installed on a separate partition. No meaningful data is st ...

, a space-management partition on a computer storage device * Mining software repositories, a field that analyzes the rich data available in software repositories

Entertainment

MSR Studios Sound on Sound Studios, formerly known as MSR Studios (Manhattan Sound Recordings) is a photography and movie producing company Recording studio, recording facility in Montclair, New Jersey. Its forebear, MSR Studios, was located in Manhattan, just ...

, a New York recording studio *

The Most Serene Republic The Most Serene Republic is a Canadian indie rock music group formed in 2003 in Milton, Ontario. The band takes its name from the sobriquet of Venice under the Doges, which was regarded as " The Most Serene Republic of Venice". Members Curre ...

, a Canadian indie rock band * ''

Metropolis Street Racer ''Metropolis Street Racer'' (''MSR'') is a racing video game developed by Bizarre Creations and published by Sega exclusively for Dreamcast. The game was intended to be a Dreamcast launch title, however, due to numerous delays it was not release ...

'', a Dreamcast racing game *

Mid-season replacement In American network television scheduling, a mid-season replacement is a television show that premieres in the second half of the traditional television season, usually between December and May. Mid-season replacements usually take place after a ...

, a television series that premieres in the second half of a traditional season *'' Metroid: Samus Returns'', a video game * Mulder Scully Romance, the relationship of the main characters of the television series ''

The X-Files ''The X-Files'' is an American science fiction on television, science fiction drama (film and television), drama television series created by Chris Carter (screenwriter), Chris Carter. The series revolves around Federal Bureau of Investigation ...

Organizations and companies

Market Street Railway (nonprofit) Market Street Railway is San Francisco Municipal Railway's (Muni) 1,200-member non-profit preservation partner. It relies on private contributions to help maintain San Francisco’s fleet of historic streetcars in service on the E Embarcadero ...

, a historic preservation organization in San Francisco, California, U.S. *

Microsoft Research Microsoft Research (MSR) is the research subsidiary of Microsoft. It was created in 1991 by Richard Rashid, Bill Gates and Nathan Myhrvold with the intent to advance state-of-the-art computing and solve difficult world problems through technologi ...

, the research division of Microsoft *

Mountain Safety Research Mountain Safety Research, or MSR, is a producer of camping, hiking and mountaineering equipment, such as portable stoves, water filters, snowshoes, and tents. While specializing in lightweight and technical equipment, MSR's gear is designed for ...

, a US company specializing in outdoor equipment *

Mouvement social révolutionnaire The Revolutionary Social Movement (in French: ''Mouvement Social Révolutionnaire'' MSR) was a fascist movement founded in France in September 1940. Its founder was Eugène Deloncle, who was previously associated with '' La Cagoule'' . The MSR ...

, the French fascist party Revolutionary Social Movement * Movimiento Social Republicano, the Republican Social Movement political party in Spain * MSR - The Israel Center for Medical Simulation, Israeli institute for Simulation-Based Medical Education

Places

Most Serene Republic Most Serene Republic ( la, Serenissima Respublica) ( it, Serenissima Repubblica) is a title attached to a number of European states through history. By custom, the appellation "Most Serene" is an indicator of sovereignty (see also Serene Highness ...

, a title in the name of various countries *

Montserrat Montserrat ( ) is a British Overseas Territories, British Overseas Territory in the Caribbean. It is part of the Leeward Islands, the northern portion of the Lesser Antilles chain of the West Indies. Montserrat is about long and wide, with r ...

(ISO 3166-1 code)

Transportation

EgyptAir Egyptair (Egyptian Arabic Egyptian Arabic, locally known as Colloquial Egyptian ( ar, العامية المصرية, ), or simply Masri (also Masry) (), is the most widely spoken vernacular Arabic dialect in Egypt. It is part of the Afro-A ...

(ICAO designator), an Egyptian airline *

Main supply route A main supply route (MSR) is the route or routes designated within an area of operations upon which the bulk of traffic flows in support of military operations and humanitarian operations. MSR is a term that is also used in insurgency and irregula ...

, a military operations supply route *

Market Street Railway (transit operator) The Market Street Railway Company was a commercial streetcar and bus operator in San Francisco. The company was named after the famous Market Street of that city, which formed the core of its transportation network. Over the years, the company ...

, a defunct company in California, U.S. *

Maserati Maserati S.p.A. () is an Italian luxury vehicle manufacturer. Established on 1 December 1914, in Bologna, Italy, the company's headquarters are now in Modena, and its emblem is a trident. The company has been owned by Stellantis since 2021. Ma ...

, a luxury sports car company *

Michigan Shore Railroad The Michigan Shore Railroad is a short line railroad in the United States owned by Genesee & Wyoming that operates of track, connecting Fremont to CSX at West Olive, Michigan. The railroad began operations in 1990, and was purchased by RailAm ...

, US *

Muar State Railway The Muar State Railway (MSR) ''(Malay: Keretapi Kerajaan Muar ; Jawi: كريتاڤي كراجأن موار)'' was a railroad operating in the district of Muar in Johor, Malaya (now Malaysia). Significantly, the MSR was the second railway line to ...

, a defunct railway formerly operating in the Johor Sultanate, British Malaya *

Mumbai Suburban Railway The Mumbai Suburban Railway ( Marathi: मुंबई उपनगरीय रेल्वे) (colloquially called local trains or simply locals) consists of exclusive inner suburban railway lines augmented by commuter rail on main lines ser ...

, India *

Muş Airport Muş "Sultan Alparslan" Airport is an airport in Muş, Turkey Turkey ( tr, Türkiye ), officially the Republic of Türkiye ( tr, Türkiye Cumhuriyeti, links=no ), is a transcontinental country located mainly on the Anatolian Peninsula i ...

(IATA airport code), Turkey

Weapons

Modern sporting rifle An AR-15-style rifle is any lightweight semi-automatic rifle based on the Colt AR-15 design. The original ArmaLite AR-15 is a scaled-down derivative of Eugene Stoner's ArmaLite AR-10 design. The then Fairchild Engine and Airplane Corporation d ...

or AR-15 style rifle * Modular Sniper Rifle, a sniper rifle produced by Remington Arms * Magnum Sniper Rifle or Accuracy International Arctic Warfare, a bolt-action sniper rifle

Other uses

* Market Stability Reserve, a part of the

European Union Emission Trading Scheme The European Union Emissions Trading System (EU ETS) is a "cap and trade" scheme where a limit is placed on the right to emit specified pollutants over an area and companies can trade emission rights within that area. It covers around 45% of th ...

Milan–San Remo Milan–San Remo (in Italian ''Milano-Sanremo''), also called "''The Spring classic''" or "''La Classicissima''", is an annual road cycling race between Milan and Sanremo, in Northwest Italy. With a distance of 298 km (~185.2 miles) it is t ...

, an annual bicycle race *

Mortgage servicing rights A mortgage servicer is a company to which some borrowers pay their mortgage loan payments and which performs other services in connection with mortgages and mortgage-backed securities. The mortgage servicer may be the entity that originated the mor ...

, the rights to collect mortgage payments from a borrower for the benefit of the lender *

Meyer Shank Racing Meyer Shank Racing (formerly Michael Shank Racing) is an American auto racing organization that competes in the IndyCar Series and IMSA SportsCar Championship. History Atlantic Championship Michael Shank as an owner of Michael Shank Racing, he ...

, an American auto racing team {{disambiguation