Suicide has become a serious worldwide mental health problem, including Asian countries. Suicidal ideation happens prior to the actual suicidal behaviour; thus, identifying the roots of suicidal ideation is vital. This study investigated the relationships between parental closeness, self-efficacy and suicidal ideation among adolescents in Malaysia. The mediation effect of self-efficacy on the relationship between parental closeness and suicidal ideation was also examined.