The Department of Defense (DoD) performs forensic science in a collaborative environment which necessitates the clear communication of all activities and their results. A critical enabler of communication is the use of a clear, internally consistent vocabulary. The goal of the Department of Defense Forensics Lexicon is to provide an operational vocabulary to address Forensics. A shared vocabulary enables a common understanding of Forensics, enhances the fidelity and the utility of operational reporting, facilitates structured data sharing, and strengthens the decision making processes across the DoD.