Action on Addiction is a UK-based charity that works with people affected by drug and alcohol addiction. It works in the areas of research, prevention, treatment, aftercare, as well as professional education and family support. The Princess of Wales has been patron since January 2012. The charity merged with The Forward Trust in May 2021.

Catherine, Princess of Wales, is a member of the British royal family. She is married to William, Prince of Wales, heir apparent to the British throne.