There is now greater urgency for global policy action because child brides are increasingly more vulnerable to HIV infection. This policy guide is part of a wider advocacy strategy to raise awareness on child marriage and its effects on communities. It is also part of the wider initiative on preventing HIV infection, particularly among adolescent girls and it aims to stimulate decision- makers worldwide, in particular government policy-makers, donors, and international development agencies, to take all necessary measures to end this violation of rights. The publication outlines this global problem and the reasons why child marriage persists, assesses how it contravenes many international human rights standards and then provides policy and programmatic recommendations. It aims to assist organizations to accelerate action and advocate for an end to this practice. This guide appeals to key policy makers to improve the quality of life of millions of girls and young women forced into child marriages.