MR

Mr, an honorific title of men, see also Master (form of address).

MR. may also refer to:

* Places
** Magyar Rádió, a Hungarian radio station
** Mauritania country code
** Menntaskólinn í Reykjavík, a secondary school in Iceland

* People and organisations
** Air Mauritania
** Mahinda Rajapaksa, President of Sri Lanka
** Master Replicas, a maker of prop replicas
** Mathematical Reviews, a database of reviews of mathematics publications
** Midland Railway
** Mouvement Réformateur, a Belgian political party
** MacRumors.com
** Matthew Reilly, an Australian author

* Scientific terms
** Mineralocorticoid receptor
** Magnetic resonance
** Magnetoresistance
** Mental retardation, a developmental disorder
** Mitral regurgitation, leaking of the mitral valve of the heart
** Relative molecular mass

* Miscellaneous
** Marathi language (ISO 639-1)
** Marginal Revenue, an economics term
** Marina and Rainer (1989), one-act chamber opera by Nikolai Korndorf
** Market Researcher, an occupation
** Master of the Rolls, in the UK legal system
** "Maximum Ride", a book about human-avian hybrids by James Patterson
** MR layout, an automotive design with a mid-mounted engine driving the rear wheels
** "Morgoth's Ring", a book by Christopher Tolkien
** Mountain Rescue
** McCune-Reischauer, a system of romanization for the Korean language
** Mileage run, a paid/revenue airline trip designed solely for gaining maximum frequent flyer miles and/or points
** mr. (without capitals) in Dutch language is the abbreviation for the academic title "Meester in de Rechten", meaning Master of Laws