The DOE 2013 Occupational Radiation Exposure Report analyzes occupational radiation exposures at U.S. Department of Energy (DOE) facilities during 2013. This report includes occupational radiation exposure information for all DOE employees, contractors, and subcontractors, as well as members of the public in controlled areas that are monitored for exposure to radiation. The 105 DOE organizations submitting radiation exposure reports for 2013 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.