GCMS may refer to:
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Gas chromatography–mass spectrometry, an analytical method to identify different substances within a test sample
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Gibson City-Melvin-Sibley Community Unit School District 5
Gibson City-Melvin-Sibley School District is a K-12 public school district based in Gibson City, Illinois
Illinois ( ) is a state in the Midwestern United States. Its largest metropolitan areas include the Chicago metropolitan area, a ...
, a K-12 public school district based in Gibson City, Illinois
* Global Case Management System is a software system used by
Immigration, Refugees and Citizenship Canada (IRCC) to process immigration and citizenship applications. Information extracted from this software system is often referred to as GCMS Notes.
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