Suicidal behavior in children and adolescents with bipolar disorder is a major public health problem that remains understudied. Most research on suicidal behavior in bipolar disorder has been conducted in older adolescents and adults and is limited by retrospective design. Although preliminary research suggests that the early onset of bipolar disorder is associated with increased suicide risk, few studies have prospectively examined the effects of prior suicidal behavior, clinical course, comorbid psychiatric disorders, familial suicidality, and psychosocial factors on suicidal behavior in bipolar youths. More systematic research is needed to better understand suicidal behavior in bipolar children and adolescents. Increased knowledge of the risk factors that contribute to suicidal behavior should lead to better prevention and treatment.