OR4 or OR-4 may refer to:
*
Other ranks (UK)
*
Oregon's 4th congressional district
Oregon's 4th congressional district represents the southern half of Oregon's coastal counties, including Coos, Curry, Douglas, Lane, and Benton counties and most of Linn and Josephine counties. It is centered around the state's two colleg ...
*Oregon Route 4, part of
U.S. Route 97 in Oregon
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