OER
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Look up o'er in Wiktionary, the free dictionary.
OER or Oer may refer to:
- Odakyu Electric Railway, a Japanese railway company
- Oer family, a German noble family
- Oer-Erkenschwick, a town in North Rhine-Westphalia, Germany
- Offense efficiency rating, the average number of points scored per shot by a basketball player
- Officer Evaluation Report, an evaluation form used by the United States Army
- Open educational resources, open documents that are useful for teaching, learning, educational, assessment and research purposes
- Oregon Electric Railway, an interurban railroad line in Oregon, United States
- Örnsköldsvik Airport in Örnsköldsvik, Sweden
- Oxygen enhancement ratio, effect magnitude of ionizing radiation due to the presence of oxygen
- Oxygen Evolution Reaction, the formation of oxygen by electrochemical reduction of water
- Owner’s Equivalent Rent, an economic metric for housing prices often used in the calculation of market baskets