Post-traumatic stress disorder (PTSD) negatively impacts sexuality, yet few studies have evaluated which component of PTSD contributes to this known association. The present study examined which of four PTSD clusters (numbing, avoidance, intrusiveness, and hyperarousal) was most closely linked to sexual problems in a sample of 197 veterans from the Iraq or Afghanistan wars. Newly registered veterans completed a packet of questionnaires including standardized measures of PTSD and questions regarding sexual functioning.