Few digital health promotion programs are tailored towards the unique health, social, and cultural needs of young Aboriginal and Torres Strait Islander males - despite their disproportionate experience of mental health concerns, suicide ideation, and suicide. This project involves the trial implementation of an adapted online social and emotional well-being health promotion program (YBMenNT), which aims to engage young Aboriginal and Torres Strait Islander males from the Northern Territory, Australia. The project uses a private social media group (i.e., Facebook or Instagram) to generate strengths-based discussions about mental health, cultural identity, and progressive concepts of manhood and masculinities. In close partnership with local community-based organizations with a trusted reputation for successfully engaging young Aboriginal and Torres Strait Islander men, we will implement the adapted YBMenNT curriculum as an online youth mental health promotion program