The 2019 UNAIDS Global AIDS update highlights that for each of the three 90s, coverage is lower for men than women. This satellite will launch a new supplement of the Journal of the International AIDS Society that aims to draw attention to the formative assessment work done on determining why men are less likely to access HIV services and the interventions and programmatic evaluations that have been designed and conducted to engage men. Science presented in the session will enable ministries of health, funders, policymakers and implementers to better develop HIV policies and implementation plans to address and integrate the health needs of men. The aim of the JIAS supplement is to draw attention to the formative assessment work done on determining why men are less likely to access HIV services and the interventions and programmatic evaluations that have been designed and conducted to engage men.