The DOE 2021 Occupational Radiation Exposure Report analyzes occupational radiation exposures at U.S. Department of Energy (DOE) facilities during calendar year 2021.  The report includes occupational radiation exposure information for over 67,000 DOE Federal employees, contractors, and subcontractors, and members of the public monitored for radiation exposure.  The 98 DOE organizations that submitted radiation exposure reports in CY 2021 have been grouped into 34 sites.  The information has been analyzed to provide a measure of DOE’s performance in protecting workers and individuals who have entered controlled areas.