This annotated bibliography compiles legal research, social science research, assessment, and best practices and policies for addressing witness intimidation. The first section reviews legal literature that analyzes the legal foundations of witness intimidation, including Supreme Court decisions, statutes, and relevant case law. The second section contains social science research on victims’ experiences of intimidation, as well as implementation of laws and policies to address the problem. The third section summarizes evaluative reports on witness intimidation dynamics in particular communities. The final section, contains best practices and policies to be implemented based on the assessment and research foundations described above.