In this chapter the author explores the mental health of those with nonbinary gender identities and focuses on the issues they face. The author defines nonbinary identities and discusses how these identities are different than people who have binary identities. There is a summary of the extant psychological literature focusing on people with nonbinary identities. Attention is also brought to how racial and ethnic minority individuals, including Native American people, conceptualize nonbinary identities. The chapter ends with information about the lack of attention to the Global South and the need for additional research and training in the mental health of those with nonbinary identities.