XDR may refer to:
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XDR (audio) or eXtended Dynamic Range, a quality-control system for pre-recorded audio cassettes
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''XDR'' (video game), for the Sega Mega Drive
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XDR DRAM, a type of computer memory
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XDR Schema, a discontinued schema language for XML documents
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External Data Representation, a data interoperability format
* Extensively drug-resistant, a category of
multiple drug resistance
Multiple drug resistance (MDR), multidrug resistance or multiresistance is antimicrobial resistance shown by a species of microorganism to at least one antimicrobial drug in three or more antimicrobial categories. Antimicrobial categories are c ...
*
Special drawing rights
Special drawing rights (SDRs, code ) are supplementary foreign exchange reserve assets defined and maintained by the International Monetary Fund (IMF). SDRs are units of account for the IMF, and not a currency ''per se''. They represent a claim ...
, a monetary unit of the International Monetary Fund (ISO 4217 currency code XDR)
*
Extended detection and response, a cyber security technology that monitors and mitigates cyber security threats
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