JCO
JCO as an acronym may stand for:
- JCO (company), a Japanese nuclear fuel cycle company involved in the Tokaimura nuclear accident
- Jamaican Caves Organisation
- Jewish Combat Organization, a Jewish resistance group during World War II
- Journal of Clinical Oncology, a medical journal
- Joyce Carol Oates, American author
- Junior commissioned officer, a group of military ranks in the armies of India, Pakistan, and Bangladesh
- Junkers, a former German aircraft manufacturer
This disambiguation page lists articles associated with the title JCO.
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