The DOE 2011 Occupational Radiation Exposure Report analyzes occupational radiation exposures at U.S. Department of Energy (DOE) facilities during 2011. This report includes occupational radiation exposure information for all DOE employees, contractors, subcontractors, and visitors. The 107 DOE organizations submitting radiation exposure reports for 2011 have been grouped into 32 sites. This information has been analyzed and trends over time are presented to provide a measure of DOE’s performance in protecting its workers from radiation.