This guide on the intentional inclusion of people with diverse sexual orientation, gender identity, gender expression and sex characteristics (SOGIESC) is part of a series of TRIPLE-F policy & practice briefs on Intentional Inclusion in TRIPLE-F. This policy contributes to the TRIPLE-F’s mission, while sustaining its efforts to eradicate extreme inequality by ensuring that the development process fully respects the dignity, human rights, cultures of all individuals, regardless of their gender in addition to their sexual orientation, gender identity & expression, and sex characteristics (SOGIESC). For all operations with the potential for particular risks and impacts on the basis of gender and/or SOGIESC, the TRIPLE-F requires a social and poverty assessment that is gender- and SOGIESC-inclusive and which assesses risks of discrimination, gender based violence (GBV), and sexual exploitation, abuse, and harassment. The TRIPLE-F recognises that differences in gender and SOGIESC expose individuals to different types of risks and levels of impacts from development projects and policies, especially in areas of health, education, labor and employment, and other key areas of life, including public spaces and services, government-funded programs, access to justice and access to resources. As social groups with identities that are often distinct from the dominant groups in their national societies, young women, girls, and young people with non-normative SOGIESC are frequently among the most marginalised and vulnerable segments of the population. As a result, their economic, social, and legal status often limits their ability to participate in and benefit from development. At the same time, the TRIPLE-F recognizes that these groups play a vital role in sustainable and inclusive development. A tremendous amount of research by development institutions shows that the focus on gender and SOGIESC is crucial to development. Inversely, when gender and SOGIESC are excluded, this not only limits economic growth but also contributes to higher extreme poverty rates.