HBOC may refer to:
- Hemoglobin-based oxygen carriers; a type of oxygen-carrying blood substitute
- Hereditary breast–ovarian cancer syndrome; a syndrome where breast and ovarian cancer occurrences in the family are suspected to be due to a hereditary factor
- HBO & Company; a medical information systems firm, now part of McKesson Corporation
This disambiguation page lists articles associated with the title HBOC.
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