The International Day Against Homophobia, Transphobia, and Biphobia was created in 2004 to draw attention to the violence and discrimination experienced by lesbian, gay, bisexual, trans, intersex people, and all of those with diverse sexual orientations, gender identities or expressions, and sex characteristics.

Initially managed by the IDAHO Committee, the initiative is now collectively managed in collaboration between regional and thematic networks working to advance the rights of people with diverse sexual orientations, gender identities or expressions, and sex characteristics. This collaboration brings together organisations and initiatives at global, regional, national, and local levels.

The International Day Against Homophobia, Transphobia, and Biphobia is currently celebrated in more than 130 countries, including 37 where same-sex acts are illegal. Thousands of initiatives, big and small, are reported throughout the planet.