Romer, Römer, Roemer, or similar may refer to: * Romer (surname), includes a list of people with the name * Romer (tool), a cartographic device also known as a reference card * Rømer scale, a disused temperature scale named after Ole Rømer * Römer, a medieval building in Frankfurt am Main * Römer (crater), a lunar crater * Romer arm, an industrial measuring device * Romer v. Evans, a United States Supreme Court case dealing with civil rights and state laws * Romer's gap in the record of vertebrate fossils c. 360–340 million years ago * Romer Shoal Light, a lighthouse off the coast of New Jersey, United States * Römer (glass), also rummer or roemer, a type of drinking glass popular in early modern Europe

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