OER may stand for: *OER - the IATA airport code for

Örnsköldsvik Airport Örnsköldsvik Airport , is a regional airport located northeast of Örnsköldsvik, Sweden, at Husum Husum (, frr, Hüsem) is the capital of the ''Kreis'' (district) Nordfriesland in Schleswig-Holstein, Germany. The town was the birthplace ...

in Örnsköldsvik, Sweden *

Open educational resources Open educational resources (OER) are teaching, learning, and research materials intentionally created and licensed to be free for the end user to own, share, and in most cases, modify. The term "OER" describes publicly accessible materials and ...

, open documents that are useful for teaching, learning, educational, assessment and research purposes. *

Offense efficiency rating In basketball statistics, Offensive Efficiency Rating (OER) is the average number of points scored by a basketball player per shot taken. This includes missed field goals as well as free throws. The statistic stems from the previously created ...

, the average number of points scored per shot by a basketball player. *

Oregon Electric Railway The Oregon Electric Railway (OE) was an interurban railroad line in the U.S. state of Oregon that linked Portland to Eugene. Service from Portland to Salem began in January 1908. The Spokane, Portland and Seattle Railway purchased the system ...

, an interurban railroad line in Oregon, United States. *

Odakyu Electric Railway , commonly known as Odakyū, is a major railway company based in Tokyo, Japan, best known for its '' Romancecar'' series of limited express trains from Tokyo to Odawara, Enoshima, Tama New Town, and Hakone. The Odakyu Electric Railway Compa ...

, a Japanese railway company. *

Oxygen enhancement ratio The oxygen enhancement ratio (OER) or oxygen enhancement effect in radiobiology refers to the enhancement of therapeutic or detrimental effect of ionizing radiation due to the presence of oxygen. This so-called oxygen effect is most notable when ce ...

, effect magnitude of ionizing radiation due to the presence of oxygen. * Oxygen Evolution Reaction, the formation of oxygen by electrochemical reduction of water. *

Officer Evaluation Report An officer is a person who has a position of authority in a hierarchical organization. The term derives from Old French ''oficier'' "officer, official" (early 14c., Modern French ''officier''), from Medieval Latin ''officiarius'' "an officer," f ...

, an evaluation form used by the United States Army.

See also