The Oregon Supreme Court (OSC) is the highest state court in the U.S. state of Oregon. The only court that may reverse or modify a decision of the Oregon Supreme Court is the Supreme Court of the United States. The OSC holds court at the Oregon Supreme Court Building in Salem, Oregon, near the capitol building on State Street. The building was finished in 1914 and also houses the state's law library, while the courtroom is also used by the Oregon Court of Appeals.

The Oregon Supreme Court Building is the home to the Oregon Supreme Court, Oregon Court of Appeals, and the Oregon Judicial Department. Located in the state capitol complex in Salem, it is Oregon's oldest state government building. The three-story structure was completed in 1914 and currently houses the state's law library, and once housed the Oregon State Library.