Ghost towns in the U.S. state of Oregon, defined as settlements that have experienced a significant reduction in population after an economic boom. They may or may not feature well-preserved (or restored) abandoned buildings. These may be locales or populated places denoted by the designation "historical" by the United States Geological Survey in the Geographic Names Information System (GNIS).

For settlements that have either been completely destroyed or have been subsumed by another settlement, see Category:Former populated places in Oregon.