MRL

MRL may refer to:

• Magnetic Reference Laboratory, an American company that makes and sells Calibration Tapes
• Margaret Ruthven Lang (1867–1972), an American composer
• Mineral Resources Limited, Australian mining company
• Official Monster Raving Loony Party, a UK political party
• Montana Rail Link, a US railroad
• Merck Research Laboratories, an American pharmaceutical company

Technology related:

• Manufacturing readiness level, a measure of the maturity of the manufacturing readiness of an object of technology related to Technology Readiness Level (TRL)
• Maximum residue limit, a trading standard, usually for pesticide residues on foodstuffs
• Media resource locator, a URI for multimedia
• Multiple rocket launcher
• Murphy Roths large, a strain of mouse, having remarkable tissue regeneration abilities
• Machine room-less elevators

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