Peers play a significant role in adolescent mental well being and suicidality. While social integration among peers is often assumed to benefit mental health, a growing literature recognizes that peer relationships can increase suicidality. ...Using cross sectional data from an understudied context, youth in Saudi Arabia n 545, 50 female, mean age 16.8 , models find friends' disclosure of depression and self harm are associated with adolescents' higher suicidal ideation net of their own depression. ...