Other uses
- Rebuilt Reading electric multiple units
- The Real Estate Roundtable, a non-profit public policy organization that represents the interests of real estate
- Real exchange rate, the purchasing power of a currency relative to another at current exchange rates and prices
- RēR, the standard abbreviation for the label Recommended Records
- Resident Evil: Revelations, 2012 video game
- Resident Evil Requiem, 2026 video game
- Respiratory exchange ratio, the ratio between the amount of carbon dioxide produced in metabolism and oxygen used
- Rough endoplasmic reticulum, a type of endoplasmic reticulum protein-manufacturing ribosomes
This disambiguation page lists articles associated with the title RER.
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