Corex may refer to:
Corex, a cough medicine Corex Process, a metal smelter configuration Corex (geological analysis), a defunct provider of analysis services to the petroleum industry Corex, in Greek mythology, one of the sons of Coronus Corex, a steel-making plant owned by Mittal Steel South Africa Corex D filter, a product of Taeyeong I&T A common misspelling of the corrugated plastic material Correx used in sign making