Because posttraumatic stress disorder (PTSD) is one of the few psychological conditions that predict suicidal behavior among those who think about suicide, many patients with PTSD present clinically with elevated suicide risk. Expert consensus and practice guidelines recommend against trauma-focused treatments for patients with elevated suicide risk, however. Research aimed at understanding the common mechanisms that underlie the association of PTSD and suicide risk has led to several advances in the effective care of suicidal patients diagnosed with PTSD. Based on these results, various combinations and sequences of suicide-focused treatments, risk management procedures, and trauma-focused treatments are implicated.