Although frequently conceptualized as a controversial issue in forensic psychology, research demonstrates that dissociation and dissociative disorders are common throughout the world. Many who are involved in civil litigation will have one or more previous trauma experiences that may lead to the reliance on dissociation as a neurologically driven mechanism to mediate distress. When dissociation becomes entrenched, the likelihood of psychological injury and related distress increases. The authors will discuss factors, such as inadequate training, that interfere with the identification and assessment of dissociative symptoms. They will also provide a brief overview of the neurobiological basis and the prevalence rates of dissociative symptoms and disorders. Potential problems with using common malingering (e.g., SIRS-2, SIMS, M-FAST) and multi-symptom self-report measures (e.g., MMPI, PAI) when evaluating individuals with a history of complex trauma are discussed and evidence-based assessment tools are described. The overall goal of this chapter is to highlight the complexities of evaluating individuals who experience dissociation and emphasize the importance of utilizing the most up-to-date tools, research, and interpretation when completing forensic evaluations where severe and/or repeated trauma is present.