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Studies have identified independent relationships between psychopathy, narcissism, and suicidality. The current study expands upon the extant literature by exploring psychopathic and narcissistic personality traits and components of the interpersonal–psychological theory of suicide, utilizing a 3-factor model of psychopathy and 2-factor model of pathological narcissism in community, undergraduate, and military individuals. We hypothesized that the impulsive–antisocial facets of psychopathy would be related to suicidal desire, whereas all facets of psychopathy would relate to the capability for suicide. We anticipated an association between pathological narcissism, thwarted belongingness, and capability for suicide, but not perceived burdensomeness. We further hypothesized a relationship between physical pain tolerance and persistence and the affective (i.e., callousness) facet of psychopathy. Results partially supported these hypotheses and underscore the need for further examination of these associations utilizing contemporary models of psychopathy and narcissism.