Smith AU, et al. - Given a link of bullying with elevated suicide risk and maladaptive development for sexual minority youth (SMY), researchers here assess if multiple forms of bullying mediate the association between biological sex and suicide risk among SMY. They also investigated if sexual identity moderates these connections (i.e., moderated mediation). From the 2015–2019 National Youth Risk Behavior Surveillance Survey, data were collected. There were 5967 youth that identified themselves as Lesbian/Gay, Bisexual, or Not sure of their sexual identity. Less suicide risk was evident, after controlling for bullying, in Male SMY vs female SMY. There was a greater likelihood to be cyberbullied among female SMY and to be threatened or injured with a weapon in male SMY. These observations align with the minority stress theory which posits an association between victimization experiences and negative mental health outcomes in minority youth. These links were not moderated by sexual identity, findings highlight new mechanistic pathways impacting sex-based suicide risk differences among SMY.