World Cancer Day is an initiative of the Union for International Cancer Control (UICC), the largest and oldest international cancer organisation dedicated to taking the lead in convening, capacity building and advocacy initiatives that unite the cancer community to reduce the global cancer burden, promote greater equity, and integrate cancer control into the world health and development agenda.

World Cancer Day was born on the 4 February 2000 at the World Summit Against Cancer for the New Millennium in Paris. The Paris Charter aims to promote research, prevent cancer, improve patient services, raise awareness and mobilise the global community to make progress against cancer, and includes the adoption of World Cancer Day.