The Harvard Gender and Sexuality Caucus is composed of more than 5,000 gay, lesbian, bisexual and transgender alumni/ae of Harvard University’s College and Graduate Schools, its faculty, staff, and current students. HGSC's purposes include:

• Building a sense of community among Harvard and Radcliffe gays, lesbians, bisexuals, and transgender people
• Maintaining and expanding a network of LGBTQ alumni/ae
• Pressing for a non-discriminatory and diverse academic, living and working environment at Harvard
• Educating others and ourselves about LGBTQ concerns and contributions
• Undertaking community service projects
• Encouraging informal coordination among LGBTQ student groups throughout the University