This study considers variables that best distinguish among attempters, ideators, and nonsuicidal youth in a sample of 527 homeless and runaway adolescents from four Midwestern states. Univariate results indicate that attempters are significantly more likely than ideators and nonsuicidal youth to have experienced physical or sexual abuse by an adult caretaker, to have experienced sexual victimization while on their own, and to have a friend who attempted suicide. Multivariate analyses reveal five variables that best distinguish among the three groups: self-esteem, depression, physical abuse, sexual abuse, and having a friend who attempted suicide. Further analysis suggests that the accumulation of these risk factors greatly increases the chance that these youth will engage in suicidal behavior.