Best Buddies International is an American nonprofit 501(c)(3) organization. It consists of volunteers that create opportunities for people with intellectual and developmental disabilities (IDD). The program's main purpose is to allow volunteers to be paired up with a buddy with an intellectual and developmental disability and provide them with a friend or a mentor. Best Buddies is the world's largest organization dedicated to ending the social, physical and economic isolation of the 200 million people with IDD. It is an international movement that has spread to over 54 countries worldwide.