Introduction: Information regarding the prevalence of potentially traumatic events (PTEs), DSM-5 posttraumatic stress disorder (PTSD) and ICD-11 complex PTSD (CPTSD) in the Netherlands is currently lacking, as is data on treatment uptake and treatment barriers. We aimed to provide prevalence estimates for potentially traumatic events, PTSD and CPTSD in the Netherlands, describe treatment seeking behavior and explore associated risk factors.