UMR may stand for:

• Underground Media Revolution, a music e-zine in Pakistan
• Uninitialized Memory Reads
• University of Missouri–Rolla, former name of the Missouri University of Science and Technology
• University of Minnesota Rochester
• Unreal Media Ripper - tool for extracting media (sounds and music) from games made in the unreal system
• Upper Mississippi River
• Ursula Maier-Rabler
• United Muslim Relief
• Unité mixte de recherche, a French administrative entity created between a research center located in a public university and a French Scientific and Technical Research Establishment (Établissement public à caractère scientifique et technologique) like CNRS or INRA
• United Medical Resources, subsidiary and third party administrator for United Healthcare Services Incorporated, a medical insurance provider.
• Universal Mandatory Reporting, laws requiring all adults to act as mandated reporters of child abuse
• Unique Market Reference, a type of unique ID used in the insurance industry

and also :

• RAAF Base Woomera, IATA airport code "UMR"