The Asociación Española contra el Cáncer (AECC) is the largest and most influential non-profit, private social entity dedicated to fighting cancer in Spain. Its mission is to be near patients and their families, providing support, information, and prevention services while promoting and funding cancer research.

The AECC operates across the country through its provincial boards and local offices, ensuring a comprehensive national presence. Key areas of work include:

• Support and Care: Offering psychological support, social services, and temporary accommodation to patients and families.
• Prevention and Health Promotion: Conducting campaigns to reduce cancer risk and encourage early detection.
• Research: Managing and funding grants and projects through its Scientific Foundation to advance cancer treatment and diagnosis.

The AECC is primarily funded by its members, volunteers, and public donations, which allows it to maintain its independence and extensive range of free services. It is a critical partner in national and international health initiatives, including various Joint Actions, focused on European-level cooperation in cancer control.