This compilation of experience and sound knowledge seeks to increase awareness about the specific circumstances of LGBT (lesbian, gay, bisexual, and transgender) diversity. Based on a wide range of literature, it provides a global vision of this reality, explaining the evolution of homosexuality during history and reasons why it has been considered a sin, an illness and a crime. Due to its global scope, this volume presents reflections and solutions relevant to any type of international organization that aims to add LGBT inclusion practices to its agenda.